SYNOPSIS
bash définit les commandes internes suivantes : :, ., [, alias, bg, bind,
break, builtin, case, cd, command, compgen, complete, continue, declare,
dirs, disown, echo, enable, eval, exec, exit, export, fc, fg, getopts, hash,
help, history, if, jobs, kill, let, local, logout, popd, printf, pushd, pwd,
read, readonly, return, set, shift, shopt, source, suspend, test, times,
trap, type, typeset, ulimit, umask, unalias, unset, until, wait, while.
COMMANDES INTERNES DE BASH
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man1/bash.1