六个优雅的Linux命令行技巧

[[ expression ]] local [option] name[=value] ...

alias [-p] [name[=value] ... ] logout [n]

bg [job_spec ...] mapfile [-d delim] [-n count] [-O or>

bind [-lpsvPSVX] [-m keymap] [-f file> popd [-n] [+N | -N]

break [n] printf [-v var] format [arguments]

builtin [shell-builtin [arg ...]] pushd [-n] [+N | -N | dir]

caller [expr] pwd [-LP]

case WORD in [PATTERN [| PATTERN]...)> read [-ers] [-a array] [-d delim] [->

cd [-L|[-P [-e]] [-@]] [dir] readarray [-n count] [-O origin] [-s>

command [-pVv] command [arg ...] readonly [-aAf] [name[=value] ...] o>

compgen [-abcdefgjksuv] [-o option] [> return [n]

complete [-abcdefgjksuv] [-pr] [-DE] > select NAME [in WORDS ... ;] do COMM>

compopt [-o|+o option] [-DE] [name ..> set [-abefhkmnptuvxBCHP] [-o option->

continue [n] shift [n]

coproc [NAME] command [redirections] shopt [-pqsu] [-o] [optname ...]

declare [-aAfFgilnrtux] [-p] [name[=v> source filename [arguments]

dirs [-clpv] [+N] [-N] suspend [-f]

disown [-h] [-ar] [jobspec ... | pid > test [expr]

echo [-neE] [arg ...] time [-p] pipeline

enable [-a] [-dnps] [-f filename] [na> times

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