Code:
From a bash terminal just enter:-
help <internal command>
shell builtins:-
builtin, !, %, ., :, @, {, }, alias, alloc, bg, bind, bindkey, break,
breaksw, builtins, case, cd, chdir, command, complete, continue, default,
dirs, do, done, echo, echotc, elif, else, end, endif, endsw, esac, eval,
exec, exit, export, false, fc, fg, filetest, fi, for, foreach, getopts,
glob, goto, hash, hashstat, history, hup, if, jobid, jobs, kill, limit,
local, log, login, logout, ls-F, nice, nohup, notify, onintr, popd,
printenv, pushd, pwd, read, readonly, rehash, repeat, return, sched, set,
setenv, settc, setty, setvar, shift, source, stop, suspend, switch,
telltc, test, then, time, times, trap, true, type, ulimit, umask,
unalias, uncomplete, unhash, unlimit, unset, unsetenv, until, wait,
where, which, while
bash builtins:-
source
alias
bg
bind
readline
break
builtin
caller
cd
command
compgen
complete
bashdefault
default
dirnames
filenames
nospace
plusdirs
arrayvar
binding
directory
disabled
enabled
export
function
group
helptopic
hostname
job
keyword
running
service
setopt
shopt
signal
stopped
user
variable
compotp
continue
declare
typeset
dirs
disown
echo
enable <- *** IMPORTANT ***
eval
exec
exit
fc
fg
getopts
hash
help
history
kill
let
local
logout
mapfile
readarray
popd
printf
pushd
pwd
read
readonly
return
set
allexport
braceexpand
emacs
arrexit
errtrace
functrace
hashall
histexpand
ignoreeof
keyword
monitor
noclobber
noexec
noglob
nolog
notify
nounset
onecmd
physical
pipefail
posix
privileged
verbose
vi
xtrace
shift
suspend
test
times
trap
type
ulimit
unmask
unalias
unset
wait
Enabled _builtin_ commands:
enable .
enable :
enable [
enable alias
enable bg
enable bind
enable break
enable builtin
enable caller
enable cd
enable command
enable compgen
enable complete
enable continue
enable declare
enable dirs
enable disown
enable echo
enable enable
enable eval
enable exec
enable exit
enable export
enable false
enable fc
enable fg
enable getopts
enable hash
enable help
enable history
enable jobs
enable kill
enable let
enable local
enable logout
enable popd
enable printf
enable pushd
enable pwd
enable read
enable readonly
enable return
enable set
enable shift
enable shopt
enable source
enable suspend
enable test
enable times
enable trap
enable true
enable type
enable typeset
enable ulimit
enable umask
enable unalias
enable unset
enable wait
