Linux chage命令詳解_Linux

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linux chage命令簡介:

chage命令用於密碼實效管理,該是用來修改帳號和密碼的有效期間限。它可以修改帳號和密碼的有效期間。對於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

命令文法:

chage [options] user

命令參數:

參數

描敘

-d

指定密碼最後修改日期

-E

密碼到期的日期,過了這天,此帳號將不可用。0表示馬上到期,-1表示永不到期。

-h

顯示協助資訊並退出

-I

密碼到期後,鎖定帳號的天數

-l

列出使用者以及密碼的有效期間

-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

密碼保持有效最大天數。

-W

密碼到期前,提前收到警告資訊的天數。

使用樣本:

1: 查看chage命令的協助資訊

[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使用者以及密碼的有效期間

[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:設定mysql使用者60天后密碼到期,至少7天后才能修改密碼,密碼到期前7天開始收到警示資訊。

[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:強制建立使用者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間限

用法:chage[-l][-m mindays][-M maxdays][-I inactive][-E expiredate][-W warndays][-d lastdays]username

參數:

-l:列出使用者的以及密碼的有效期間限
-m:修改密碼的最小天數
-M:修改密碼的最大天數
-I:密碼到期後,鎖定帳號的天數
-d:指定密碼最後修改的日期
-E:有效期間,0表示立即到期,-1表示永不到期
-W:密碼到期前,開始警告天數

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