bash, :, ., alias, bg, bind, break, builtin, case, cd, command,
continue, declare, dirs, disown, echo, enable, eval, exec, exit,
export, fc, fg, for, getopts, hash, help, history, if, jobs, kill,
let, local, logout, popd, 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, voir
bash(1)