CHFN(1)                            用户命令                            CHFN(1)

名称
       chfn - 更改真名和信息

大纲
       chfn [选项] [登录]

描述
       The chfn command changes user fullname, office room number, office
       phone number, and home phone number information for a user‘s account.
       This information is typically printed by finger(1) and similar
       programs. A normal user may only change the fields for her own account,
       subject to the restrictions in /etc/login.defs. (The default
       configuration is to prevent users from changing their fullname.) The
       superuser may change any field for any account. Additionally, only the
       superuser may use the -o option to change the undefined portions of the
       GECOS field.

       These fields must not contain any colons. Except for the other field,
       they should not contain any comma or equal sign. It is also recommended
       to avoid non-US-ASCII characters, but this is only enforced for the
       phone numbers. The other field is used to store accounting information
       used by other applications.

选项
       chfn 命令可以接受的选项有：

       -f, --full-nameFULL_NAME
           更改用户的全名

       -h, --home-phoneHOME_PHONE
           Change the user‘s home phone number.

       -r, --roomROOM_NUMBER

       -w, --work-phoneWORK_PHONE
           Change the user‘s office phone number.

　　　　
       -o, --otherOTHER
           Change the user‘s other GECOS information. This field is used to
           store accounting information used by other applications, and can be
           changed only by a superuser.

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

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


       If none of the options are selected, chfn operates in an interactive
       fashion, prompting the user with the current values for all of the
       fields. Enter the new value to change the field, or leave the line
       blank to use the current value. The current value is displayed between
       a pair of [ ] marks. Without options, chfn prompts for the current user
       account.

配置文件
       在 /etc/login.defs 中有如下配置变量，可以用来更改此工具的行为：

       CHFN_RESTRICT (string)
           This parameter specifies which values in the gecos field of the
           /etc/passwd file may be changed by regular users using the chfn
           program. It can be any combination of letters f, r, w, h, for Full
           name, Room number, Work phone, and Home phone, respectively. For
           backward compatibility, yes is equivalent to rwh and no is
           equivalent to frwh. If not specified, only the superuser can make
           any changes. The most restrictive setting is better achieved by not
           installing chfn SUID.

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

       /etc/passwd
           用户账户信息。
参见
       chsh(1), login.defs(5), passwd(5).

shadow-utils 4.1.5.1              2014-02-17                           CHFN(1)

Linux -- chfn