chsh is used to change your login shell.
If a shell is not given on the command line,
chsh prompts for one.
chsh will accept the full pathname of any executable file on the system.
However, it will issue a warning if the shell is not listed in the
On the other hand, it can also be configured such that it will
only accept shells listed in this file, unless you are root.
Specify your login shell.
Print the list of shells listed in
/etc/shells and exit.