help - displays the information about the built-in commands present in the
Linux shell
To display information about help command
$ help help
$ help cd
To display short description about commands
$ help -d help
$ help -d ls
$ help -d cd
To display usage in pseudo-manpage format
$ help -m help
$ help -m pwd
To display short usage synopsis for each topic matching PATTERN
$ help -s pwd
$ help -s cd
regards,
T.Dhanasekar