bash help
# help
ってなにげなく打ってみたら、
GNU bash, version 4.0.28(2)-release (i686-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 history -anrw [filename] or histo> (( expression )) if COMMANDS; then COMMANDS; [ elif COMMANDS; then COMMANDS; ]... > . filename [arguments] jobs [-lnprs] [jobspec ...] or jobs -x command [args] : kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kil> [ arg... ] let arg [arg ...] [[ expression ]] local [option] name[=value] ...
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