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 - bash built-in
commands, see bash(1)
bash(1), sh(1)