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TRS-DOS (which stood for the Tandy Radio Shack - Disk Operating System) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with Tandy DOS, a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs). TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems. TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the ''system'' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0. ==Commands== Some typical TRS-DOS utilities: :Notes: : * Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection. : * The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string" : * Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit LOAD command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The LOAD command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent. : * Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system. : * ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files. : * The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named AUTOEXEC.BAT contained a list of such commands. On UNIX a set of one or more ''rc'' files under ''/etc/'' are a set of boot time "run commands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents. : * TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically: : * *COPY filea fileb : * *COPY filea TO fileb : * Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive#'' Although MS-DOS owes its heritage most closely to CP/M and thence to TOPS-10, many of the file manipulation commands are very similar to those of TRS-DOS. By comparison the CP/M command for copying files was called ''pip'' (both a pun on the Pip printers, a chain of copy centers in that era, and an acronym standing for "Peripheral Interchange Program"). 抄文引用元・出典: フリー百科事典『 :* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディア（Wikipedia）』 ■:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディアで「'''TRS-DOS''' (which stood for the '''T'''andy '''R'''adio '''S'''hack - '''D'''isk '''O'''perating '''S'''ystem) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with '''Tandy DOS''', a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs).TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems.TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the '''''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive」の詳細全文を読む TRS-DOS (which stood for the Tandy Radio Shack - Disk Operating System) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with Tandy DOS, a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs). TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems. TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the ''system'' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0. ==Commands== Some typical TRS-DOS utilities: :Notes: : * Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection. : * The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string" : * Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit LOAD command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The LOAD command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent. : * Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system. : * ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files. : * The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named AUTOEXEC.BAT contained a list of such commands. On UNIX a set of one or more ''rc'' files under ''/etc/'' are a set of boot time "run commands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents. : * TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically: : * *COPY filea fileb : * *COPY filea TO fileb : * Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive#'' Although MS-DOS owes its heritage most closely to CP/M and thence to TOPS-10, many of the file manipulation commands are very similar to those of TRS-DOS. By comparison the CP/M command for copying files was called ''pip'' (both a pun on the Pip printers, a chain of copy centers in that era, and an acronym standing for "Peripheral Interchange Program"). 抄文引用元・出典: フリー百科事典『 :* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディア（Wikipedia）』 ■:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディアで「'''TRS-DOS''' (which stood for the '''T'''andy '''R'''adio '''S'''hack - '''D'''isk '''O'''perating '''S'''ystem) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with '''Tandy DOS''', a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs).TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems.TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the '''''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive」の詳細全文を読む TRS-DOS (which stood for the Tandy Radio Shack - Disk Operating System) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with Tandy DOS, a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs). TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems. TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the ''system'' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0. ==Commands== Some typical TRS-DOS utilities: :Notes: : * Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection. : * The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string" : * Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit LOAD command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The LOAD command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent. : * Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system. : * ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files. : * The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named AUTOEXEC.BAT contained a list of such commands. On UNIX a set of one or more ''rc'' files under ''/etc/'' are a set of boot time "run commands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents. : * TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically: : * *COPY filea fileb : * *COPY filea TO fileb : * Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive#'' Although MS-DOS owes its heritage most closely to CP/M and thence to TOPS-10, many of the file manipulation commands are very similar to those of TRS-DOS. By comparison the CP/M command for copying files was called ''pip'' (both a pun on the Pip printers, a chain of copy centers in that era, and an acronym standing for "Peripheral Interchange Program"). 抄文引用元・出典: フリー百科事典『 :* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディア（Wikipedia）』 ■:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディアで「'''TRS-DOS''' (which stood for the '''T'''andy '''R'''adio '''S'''hack - '''D'''isk '''O'''perating '''S'''ystem) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with '''Tandy DOS''', a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs).TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems.TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the '''''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive」の詳細全文を読む TRS-DOS (which stood for the Tandy Radio Shack - Disk Operating System) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with Tandy DOS, a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs). TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems. TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the ''system'' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0. ==Commands== Some typical TRS-DOS utilities: :Notes: : * Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection. : * The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string" : * Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit LOAD command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The LOAD command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent. : * Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system. : * ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files. : * The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named AUTOEXEC.BAT contained a list of such commands. On UNIX a set of one or more ''rc'' files under ''/etc/'' are a set of boot time "run commands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents. : * TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically: : * *COPY filea fileb : * *COPY filea TO fileb : * Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive#'' Although MS-DOS owes its heritage most closely to CP/M and thence to TOPS-10, many of the file manipulation commands are very similar to those of TRS-DOS. By comparison the CP/M command for copying files was called ''pip'' (both a pun on the Pip printers, a chain of copy centers in that era, and an acronym standing for "Peripheral Interchange Program"). 抄文引用元・出典: フリー百科事典『 :* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディア（Wikipedia）』 ■:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディアで「'''TRS-DOS''' (which stood for the '''T'''andy '''R'''adio '''S'''hack - '''D'''isk '''O'''perating '''S'''ystem) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with '''Tandy DOS''', a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs).TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems.TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the '''''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive」の詳細全文を読む TRS-DOS (which stood for the Tandy Radio Shack - Disk Operating System) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with Tandy DOS, a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs). TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems. TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the ''system'' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0. ==Commands== Some typical TRS-DOS utilities: :Notes: : * Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection. : * The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string" : * Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit LOAD command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The LOAD command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent. : * Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system. : * ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files. : * The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named AUTOEXEC.BAT contained a list of such commands. On UNIX a set of one or more ''rc'' files under ''/etc/'' are a set of boot time "run commands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents. : * TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically: : * *COPY filea fileb : * *COPY filea TO fileb : * Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive#'' Although MS-DOS owes its heritage most closely to CP/M and thence to TOPS-10, many of the file manipulation commands are very similar to those of TRS-DOS. By comparison the CP/M command for copying files was called ''pip'' (both a pun on the Pip printers, a chain of copy centers in that era, and an acronym standing for "Peripheral Interchange Program"). 抄文引用元・出典: フリー百科事典『 ''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディア（Wikipedia）』 ■:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディアで「'''TRS-DOS''' (which stood for the '''T'''andy '''R'''adio '''S'''hack - '''D'''isk '''O'''perating '''S'''ystem) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with '''Tandy DOS''', a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs).TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems.TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the '''''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive」の詳細全文を読む ■:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディアで「'''TRS-DOS''' (which stood for the '''T'''andy '''R'''adio '''S'''hack - '''D'''isk '''O'''perating '''S'''ystem) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with '''Tandy DOS''', a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs).TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems.TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the '''''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive」の詳細全文を読む ■:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディアで「'''TRS-DOS''' (which stood for the '''T'''andy '''R'''adio '''S'''hack - '''D'''isk '''O'''perating '''S'''ystem) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with '''Tandy DOS''', a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs).TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems.TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the '''''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive」の詳細全文を読む ■:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディアで「'''TRS-DOS''' (which stood for the '''T'''andy '''R'''adio '''S'''hack - '''D'''isk '''O'''perating '''S'''ystem) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with '''Tandy DOS''', a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs).TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems.TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the '''''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive」の詳細全文を読む ■''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive">ウィキペディアで「'''TRS-DOS''' (which stood for the '''T'''andy '''R'''adio '''S'''hack - '''D'''isk '''O'''perating '''S'''ystem) was the operating system for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers that were sold through Radio Shack through the late 1970s and early 1980s. Tandy's manuals recommended that it be pronounced ''triss-doss''. TRS-DOS should not be confused with '''Tandy DOS''', a version of MS-DOS licensed from Microsoft for Tandy's x86 line of personal computers (PCs).TRS-DOS was primarily a way of extending the MBASIC (BASIC in ROM) with additional I/O (input/output) commands that worked with disk files rather than the cassette tapes that were used by most other TRS-80 systems.TRS-DOS supported up to four floppy (mini-diskette) drives which used 5" (five and one quarter inch) diskettes with a capacity of 89K (kilobytes) each (later 160K). The drives were numbered 0 through 3 and the '''''system''''' diskettes (which contained the TRS-DOS code and utilities) had to be in drive 0.==Commands==Some typical TRS-DOS utilities::Notes::* Since TRS-DOS did not have the notion of ''redirection'' as UNIX/Linux and MS-DOS do, the APPEND command is somewhat different in concept than the UNIX or MS-DOS notion of appending via output redirection.:* The CLOCK command display a real time clock in the upper corner of the display, almost like a DOS TSR (Terminate and Stay Resident); no exactly corresponding feature exists in MS-DOS or UNIX, though many programs provided similar features for DOS and the common UNIX shells could embed the time into their user defined "prompt string":* Program invocation under TRS-DOS, DOS and UNIX is done by filename; no explicit '''LOAD''' command is required for normal binary executables nor for text command files (batch files in DOS and shell scripts in UNIX/Linux). The '''LOAD''' command under TRS-DOS would load a binary program into memory, but would not execute it; neither DOS nor UNIX has an equivalent.:* Under DOS and UNIX printing a file can be done with redirection; under UNIX it is normally done by spooling the file to the "line printer" (using the ''lpr'' command) because UNIX is conventionally a multi-user system.:* ATTRIB, PROT, and the ''chmod'' UNIX command are all somewhat different in their semantics. UNIX/Linux is multi-user and each user can control read, write, and execute permissions on his or her own files and directories. MS-DOS is single user and the file attributes for "read-only," "hidden," and "system" are advisory in nature. TRS-DOS was single user but supported some sort of on disk password protection for specific files.:* The AUTO command set an automatic command to be executed on TRS-DOS boot; under MSDOS the special, reserved file named '''AUTOEXEC.BAT''' contained a list of such commands. On UNIX a set of one or more '''''rc''''' files under ''/etc/'' are a set of boot time "'''r'''un '''c'''ommands" and special "dot files" in a user's home directory are run for each time that a given user logs into the system. UNIX supports many other "dotfiles" for many of its commands which are akin to the Macintosh "preferences" folder contents.:* TRS-DOS (version II) was notable for the inclusion of ''noise'' words, similar to the 1959 COBOL specification. These made commands more English-like. For example, the following commands functioned identically::**COPY filea fileb:**COPY filea TO fileb**COPY fileb FROM filea -->:* Many versions supported a simple password security for files and programs, with separate Read/Execute and full access capabilities. ex: ''filename/ext.password:drive」の詳細全文を読む スポンサード リンク
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