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Files transferred over Shell protocol (FISH) is a network protocol that uses Secure Shell (SSH) or Remote Shell (RSH) to transfer files between computers and manage remote files. The advantage of FISH is that all it requires on the server-side is an SSH or RSH implementation, Unix shell, and a set of standard Unix utilities (like ls, cat or dd—unlike other methods of remote access to files via a remote shell, scp for example, which requires ''scp'' on the server side). Optionally, there can be a special FISH server program (called ''start_fish_server'') on the server, which executes FISH commands instead of Unix shell and thus speeds up operations. The protocol was designed by Pavel Machek in 1998 for the Midnight Commander software tool. == Protocol messages == Client sends text requests of the following form: #FISH_COMMAND arguments... equivalent shell commands, which may be multi-line Fish commands are all defined, shell equivalents may vary. Fish commands always have priority: the server is expected to execute a fish command if it understands it. If it does not, however, it can try and execute a shell command. When there is no special server program, Unix shell ignores the fish command as a comment and executes the equivalent shell command(s). Server replies are multi-line, but always end with ### xyz line. ### is a prefix to mark this line, xyz is the return code.Return codes are superset to those used in ftp. The codes 000 and 001 are special, their meaning depends on presence of server output before the end line. 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「Files transferred over shell protocol」の詳細全文を読む スポンサード リンク
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