Linux修改用户密码使用期限账号到期时间问题

[root@node2 ~ ]# chage --help
Usage: chage [options] LOGIN

Options:
  -d, --lastday LAST_DAY        set date of 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
  -R, --root CHROOT_DIR         directory to chroot into
  -W, --warndays WARN_DAYS      set expiration warning days to WARN_DAYS

[root@node2 ~ ]# 

   [root@node2 ~ ]# chage -l root       
    Last password change					: never
    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     密码永不过期
    Number of days of warning before password expires	: 7

[root@node2 ~ ]# chage -d 0 -m 0 -M 180 -W 15 root    设置密码最低有效期0-180天，提前15天发警报提醒
[root@node2 ~ ]# chage -l root
Last password change					: Jun 20, 2019           最近一次密码更改:2019年6月20日
Password expires					: Dec 17, 2019               密码过期:2019年12月17日
Password inactive					: never                      密码无效:从未
Account expires						: never                      帐户过期:从未
Minimum number of days between password change		: 0          密码更改之间的最短天数:0
Maximum number of days between password change		: 180        密码更改之间的最大天数:180天
Number of days of warning before password expires	: 15         密码过期前的警告天数:15天
[root@node2 ~ ]# 

[root@node2 ~ ]# passwd
Changing password for user root.
New password: 
Retype new password: 
passwd: all authentication tokens updated successfully.
[root@node2 ~ ]# 
[root@node2 ~ ]# 
[root@node2 ~ ]# chage -l root
Last password change					: Jun 24, 2019
Password expires					: Jun 26, 2019
Password inactive					: never
Account expires						: never
Minimum number of days between password change		: 0
Maximum number of days between password change		: 2
Number of days of warning before password expires	: 1
[root@node2 ~ ]# 

PASS_MAX_DAYS 90 #密码最大有效期，表示90天后，密码会过期。99999表示永不过期。
PASS_MIN_DAYS 0 #两次修改密码的最小间隔时间，0表示可以随时修改账号密码
PASS_MIN_LEN 6 #密码最小长度，对于root无效
PASS_WARN_AGE 10 #密码过期前多少天开始提示

[root@node1 ~ 14:03:24]# useradd aihuidi

[root@node1 ~ 14:03:31]# chage -l aihuidi
Last password change					: Jul 08, 2019
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

Last password change： 表示账号创建时的时间
Account expires： 表示账号到期时间

[root@node1 ~ 14:03:36]# usermod -e "Jul 10,2019" aihuidi

[root@node1 ~ 14:07:09]# chage -l aihuidi
Last password change					: Jul 08, 2019
Password expires					: never
Password inactive					: never
Account expires						: Jul 10, 2019
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
[root@node1 ~ 14:07:13]#