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April, 26th. 2006:
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CHSH
Section: User Commands (1) Updated: 05/17/2017 Index
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NAME
chsh - change login shell
SYNOPSIS
-
chsh [options] [LOGIN]
DESCRIPTION
The
chsh
command 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 superuser 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.
-R, --root CHROOT_DIR
-
Apply changes in the
CHROOT_DIR
directory and use the configuration files from the
CHROOT_DIR
directory.
-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 superuser, 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.
CONFIGURATION
The following configuration variables in
/etc/login.defs
change the behavior of this tool:
CHSH_AUTH (boolean)
-
If
yes, the
chsh
program will require authentication before making any changes, unless run by the superuser.
LOGIN_STRING (string)
-
The string used for prompting a password. The default is to use "Password: ", or a translation of that string. If you set this variable, the prompt will not be translated.
If the string contains
%s, this will be replaced by the user's name.
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).
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- NOTE
-
- CONFIGURATION
-
- FILES
-
- SEE ALSO
-
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