Definitions for "Login shell"
Keywords:  invoked, shell, passwd, start, entry
(n.) The name of the default shell that you use when you log in.
a shell invoked when you log in
The shell that is automatically started for you when you log in. You can start to work in other shells, but your login shell will always exist until you log out.
Keywords:  leader, common, group, example, process
a common example of a process group leader