名称

       chsh - 更改登录 shell

大纲

       chsh [选项] [登录]

描述

       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.

选项

       chsh 命令可以接受的选项有：

       -h, --help
           现实帮助信息并退出。

       -R, --rootCHROOT_DIR
           Apply changes in the CHROOT_DIR directory and use the configuration files from the
           CHROOT_DIR directory.

       -s, --shellSHELL
           用户的新登录 shell 的名称。将此字段设置为空会让系统选择默认的登录 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.

注意

       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.

文件

       /etc/passwd
           用户账户信息。

       /etc/shells
           可用的登录 shell 的列表。

       /etc/login.defs
           Shadow 密码套件配置。

参见

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