bash, :, ., [, alias, bg, bind, break, builtin, caller, cd, command,
compgen, complete, compopt, continue, declare, dirs, disown, echo,
enable, eval, exec, exit, export, false, fc, fg, getopts, hash, help,
history, jobs, kill, let, local, logout, mapfile, popd, printf, pushd,
pwd, read, readonly, return, set, shift, shopt, source, suspend, test,
times, trap, true, type, typeset, ulimit, umask, unalias, unset, wait -
bash built-in commands, see bash(1)
