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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Join (Unix) ： ウィキペディア英語版 join is a command in Unix-like operating systems that merges the lines of two sorted text files based on the presence of a common field. It is similar to the join operator used in relational databases but operating on text files.The join command takes as input two text files and a number of options. If no command-line argument is given, this command looks for a pair of lines from the two files having the same first field (a sequence of characters that are different from space), and outputs a line composed of the first field followed by the rest of the two lines.The program arguments specify which character to be used in place of space to separate the fields of the line, which field to use when looking for matching lines, and whether to output lines that do not match. The output can be stored to another file rather than printing using redirection.As an example, the two following files list the known fathers and the mothers of some people. Note that both files have been sorted on the join field — this is a requirement of the program. george jim kumar gunaware albert martha george sophieThe join of these two files (with no argument) would produce: george jim sophieIndeed, only "george" is common as a first word of both files.==See also==* Textutils* Join (SQL)* Relational algebra* List of Unix programs join is a command in Unix-like operating systems that merges the lines of two sorted text files based on the presence of a common field. It is similar to the join operator used in relational databases but operating on text files. The join command takes as input two text files and a number of options. If no command-line argument is given, this command looks for a pair of lines from the two files having the same first field (a sequence of characters that are different from space), and outputs a line composed of the first field followed by the rest of the two lines. The program arguments specify which character to be used in place of space to separate the fields of the line, which field to use when looking for matching lines, and whether to output lines that do not match. The output can be stored to another file rather than printing using redirection. As an example, the two following files list the known fathers and the mothers of some people. Note that both files have been sorted on the join field — this is a requirement of the program. george jim kumar gunaware albert martha george sophie The join of these two files (with no argument) would produce: george jim sophie Indeed, only "george" is common as a first word of both files. ==See also== * Textutils * Join (SQL) * Relational algebra * List of Unix programs 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「join is a command in Unix-like operating systems that merges the lines of two sorted text files based on the presence of a common field. It is similar to the join operator used in relational databases but operating on text files.The join command takes as input two text files and a number of options. If no command-line argument is given, this command looks for a pair of lines from the two files having the same first field (a sequence of characters that are different from space), and outputs a line composed of the first field followed by the rest of the two lines.The program arguments specify which character to be used in place of space to separate the fields of the line, which field to use when looking for matching lines, and whether to output lines that do not match. The output can be stored to another file rather than printing using redirection.As an example, the two following files list the known fathers and the mothers of some people. Note that both files have been sorted on the join field — this is a requirement of the program. george jim kumar gunaware albert martha george sophieThe join of these two files (with no argument) would produce: george jim sophieIndeed, only "george" is common as a first word of both files.==See also==* Textutils* Join (SQL)* Relational algebra* List of Unix programs」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.