linux chage命令簡介：
chage命令用于密碼實效管理，該是用來修改帳號和密碼的有效期限。它可以修改賬號和密碼的有效期。對于chage命令的描述如下所示：
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 his/her password
命令語法：
chage [options] user
命令參數：
|
參數 |
描敘 |
|
-d |
指定密碼最后修改日期 |
|
-e |
密碼到期的日期，過了這天，此賬號將不可用。0表示馬上過期，-1表示永不過期。 |
|
-h |
顯示幫助信息并退出 |
|
-i |
密碼過期后，鎖定賬號的天數 |
|
-l |
列出用戶以及密碼的有效期 |
|
-m |
密碼可以更改的最小天數。為零代表任何時候都可以更改密碼。 |
|
-m |
密碼保持有效的最大天數。 |
|
-w |
密碼過期前，提前收到警告信息的天數。 |
使用示例：
1: 查看chage命令的幫助信息
[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用戶以及密碼的有效期
[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：設置mysql用戶60天后密碼過期，至少7天后才能修改密碼，密碼過期前7天開始收到告警信息。
[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 ~]#
clip_image001
4：強制新建用戶第一次登陸時修改密碼
[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
maximum number of days between password change : 99999
number of days of warning before password expires : 7
下面給大家介紹linux chage命令
功能：修改帳號和密碼的有效期限
用法：chage[-l][-m mindays][-m maxdays][-i inactive][-e expiredate][-w warndays][-d lastdays]username
參數：
-l：列出用戶的以及密碼的有效期限
-m:修改密碼的最小天數
-m：修改密碼的最大天數
-i：密碼過期后，鎖定帳號的天數
-d：指定密碼最后修改的日期
-e：有效期，0表示立即過期，-1表示永不過期
-w：密碼過期前，開始警告天數
