Provided by: passwd_4.0.18.1-9_i386 bug
 

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.
        chfn(1), login.defs(5), passwd(5).