名称

       chage - 更改用户密码过期信息

大纲

       chage [选项] 登录

描述

       The chage command changes the number of days between password changes and the date of the last password
       change. This information is used by the system to determine when a user must change their password.

选项

       The options which apply to the chage command are:

       -d, --lastday LAST_DAY
           Set the number of days since January 1st, 1970 when the password was last changed. The date may also
           be expressed in the format YYYY-MM-DD (or the format more commonly used in your area).

       -E, --expiredate EXPIRE_DATE
           Set the date or number of days since January 1, 1970 on which the user's account will no longer be
           accessible. The date may also be expressed in the format YYYY-MM-DD (or the format more commonly used
           in your area). A user whose account is locked must contact the system administrator before being able
           to use the system again.

           Passing the number -1 as the EXPIRE_DATE will remove an account expiration date.

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

       -i, --iso8601
           When printing dates, use YYYY-MM-DD format.

       -I, --inactive INACTIVE
           Set the number of days of inactivity after a password has expired before the account is locked. The
           INACTIVE option is the number of days of inactivity. A user whose account is locked must contact the
           system administrator before being able to use the system again.

           Passing the number -1 as the INACTIVE will remove an account's inactivity.

       -l, --list
           现实账户年龄信息。

       -m, --mindays MIN_DAYS
           Set the minimum number of days between password changes to MIN_DAYS. A value of zero for this field
           indicates that the user may change their password at any time.

       -M, --maxdays MAX_DAYS
           Set the maximum number of days during which a password is valid. When MAX_DAYS plus LAST_DAY is less
           than the current day, the user will be required to change their password before being able to use
           their account. This occurrence can be planned for in advance by use of the -W option, which provides
           the user with advance warning.

           Passing the number -1 as MAX_DAYS will remove checking a password's validity.

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

       -W, --warndays WARN_DAYS
           Set the number of days of warning before a password change is required. The WARN_DAYS option is the
           number of days prior to the password expiring that a user will be warned their password is about to
           expire.

       If none of the options are selected, chage 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.

注意

       The chage program requires a shadow password file to be available.

       The chage command is restricted to the root user, except for the -l option, which may be used by an
       unprivileged user to determine when their password or account is due to expire.

配置文件

       The following configuration variables in /etc/login.defs change the behavior of this tool:

文件

       /etc/passwd
           用户账户信息。

       /etc/shadow
           安全用户账户信息。

退出值

       The chage command exits with the following values:

       0
           success

       1
           permission denied

       2
           invalid command syntax

       15
           can't find the shadow password file

参见

       passwd(5), shadow(5).