14

I'd like to set up an account on a linux server and make the account's password never expire. I'm having difficulties figuring it out with the passwd man page. Could someone please help me out?

23

To maximize password expiration:

passwd -x 99999 username

To disable account expiration:

usermod -e '' username

To do both with chage:

chage -E -1 -M -1 username

To set the system defaults, look at /etc/default/useradd

5

Use chage command:

chage -M -1 USERNAME
2

Solaris/SunOS:

Turn off aging while allowing user to retain current password

passwd -x -1 username

Force user to change password at next login, and then turn off aging

passwd -x 0 username

(Hopefully this helps someone out)

https://docs.oracle.com/cd/E19455-01/806-1387/6jam6929e/index.html#a08paswd-89198

0

You want the chage command you just set the account minimum password to a rediculously long time like 9999999999 days.

here is a very good howto - http://www.cyberciti.biz/tips/setting-off-password-aging-expiration.html

1
  • 1
    chage has an explicit value for this behavior. See bindbn's answer for example. – Allen Nov 12 '13 at 17:55
0

The complete command to mitigate any other previous configurations is the following:

chage -E -1 -M -1 -I -1 username
0

AIX: Non expiring password

Changing user history size

chuser histsize=0 <userid>

change the users password

passwd <userid>

Clear flags that tells the OS to reset password on login (after password reset)

pwdadm -c <userid>

If you do not want to cause any commotion by editing your user history size you can use the following command to change the security file to say that the last time you reset your password is always today's date. You can export this in your .profile file so it runs every time you log in as well.

chsec -f /etc/security/passwd -s <userid> -a lastupdate=`date +%s`
0

Here is a full example of chage command (Change age) about Linux expiration password: Completely disable password expiration and account:

Parameters command chage :

-m 0 : Minimum number of days for the password change.
-M 99999 : Maximum number of days a password change.
-I -1 : We set: "Password inactive" never.
-E -1 : We set: "Expires Account" never.

The example username is: sysadmit

[root@linux1~] # chage -m 0 -M 99999 -I -1 -1 -E sysadmit

[root@linux1~] # chage --list sysadmit
Last password change: July 15, 2017 
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 Expires password 7 

Extracted from: http://www.sysadmit.com/2017/11/linux-caducidad-contrasena.html

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