シェルの組み込みコマンドの一覧を表示する
bash の組み込みコマンドの一覧を表示するには 組み込みコマンドの help を使います。
$ help GNU bash, version 4.1.5(1)-release (i486-pc-linux-gnu) These shell commands are defined internally. Type `help' to see this list. Type `help name' to find out more about the function `name'. Use `info bash' to find out more about the shell in general. Use `man -k' or `info' to find out more about commands not in this list. A star (*) next to a name means that the command is disabled. job_spec [&] history [-c] [-d offset] [n] or hist> (( expression )) if COMMANDS; then COMMANDS; [ elif C> . filename [arguments] jobs [-lnprs] [jobspec ...] or jobs > : kill [-s sigspec | -n signum | -sigs> [ arg... ] let arg [arg ...] [[ expression ]] local [option] name[=value] ...
組み込みコマンドの詳細を見るには help の後にコマンドを続けて書きます。
$ help bg bg: bg [job_spec ...] Move jobs to the background. Place the jobs identified by each JOB_SPEC in the background, as if they had been started with `&'. If JOB_SPEC is not present, the shell's notion of the current job is used. Exit Status: Returns success unless job control is not enabled or an error occurs.
tcsh や csh の組み込みコマンドの一覧を表示するには builtins コマンドを使います。
> builtins : @ alias alloc bg bindkey break breaksw builtins case cd chdir complete continue default dirs echo echotc else end endif endsw eval exec exit fg filetest foreach
