NAME
chsh - change login shell
SYNOPSIS
chsh [options] [LOGIN]
DESCRIPTION
chsh
changes the user login shell. This determines the name of the user's initial login command. A normal user may only change the login shell for her own account, the super user may change the login shell for any account.
OPTIONS
The options which apply to the
chsh
command are:
-h, --help
Display help message and exit.
-s, --shell SHELL
The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.
If the
-s
option is not selected,
chsh
operates in an interactive fashion, prompting the user with the current login shell. Enter the new value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of
[ ]
marks.
NOTE
The only restriction placed on the login shell is that the command name must be listed in
/etc/shells, unless the invoker is the super-user, and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing
/bin/rsh
in
/etc/shells
is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell back to its original value.
FILES
/etc/passwd
User account information.
/etc/shells
List of valid login shells.
/etc/login.defs
Shadow password suite configuration.
SEE ALSO
chfn(1),
login.defs(5),
passwd(5).
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