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密码过期前,提前收到警告信息的天数。
使用示例:
1: 查看chage命令的帮助信息
[root@DB-Server ~]#man chage
[root@DB-Server ~]# info chage
[root@DB-Server ~]# chage -h
Usage: chage [options] user
Options:
-d, --lastday LAST_DAY set last password change to LAST_DAY
-E, --expiredate EXPIRE_DATE set account expiration date to EXPIRE_DATE
-h, --help display this help message and exit
-I, --inactive INACTIVE set password inactive after expiration
to INACTIVE
-l, --list show account aging information
-m, --mindays MIN_DAYS set minimum number of days before password
change to MIN_DAYS
-M, --maxdays MAX_DAYS set maximim number of days before password
change to MAX_DAYS
-W, --warndays WARN_DAYS set expiration warning days to WARN_DAYS
2:查看mysql用户以及密码的有效期
[root@DB-Server ~]# chage -l mysql
Last password change : Mar 26, 2015
Password expires : never
Password inactive : never
Account expires : never
Minimum number of days between password change : -1
Maximum number of days between password change : -1
Number of days of warning before password expires : -1
[root@DB-Server ~]#
3:设置mysql用户60天后密码过期,至少7天后才能修改密码,密码过期前7天开始收到告警信息。
[root@DB-Server ~]# chage -M 60 -m 7 -W 7 mysql
You have new mail in /var/spool/mail/root
[root@DB-Server ~]# chage -l mysql
Last password change : Mar 26, 2015
Password expires : May 25, 2015
Password inactive : never
Account expires : never
Minimum number of days between password change : 7
Maximum number of days between password change : 60
Number of days of warning before password expires : 7
[root@DB-Server ~]#
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4:强制新建用户第一次登陆时修改密码
[root@DB-Server home]# useradd test
[root@DB-Server home]# passwd test
Changing password for user test.
New UNIX password:
Retype new UNIX password:
passwd: all authentication tokens updated successfully.
[root@DB-Server home]# chage -d 0 test
You have new mail in /var/spool/mail/root
[root@DB-Server home]# chage -l test
Last password change : password must be changed
Password expires : never
Password inactive : never
Account expires : never
Minimum number of days between password change : 0