How to set expiry date for user in Linux

How to set expiry date for user in linux

In Previous tutorial we learn about how to add a new  user and how to set passwd to user in linux now we will learn about changing the password parameters in linux.

For changing of the password parameters and set expiry date you need to use the chage command. It will display password expiry information as well as 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 or her password.

Changing of the password parameters can be done by two ways.

#chage <user name>

#chage <option> <value> <username>

Lets see the frist method and then the other.

To set the password parameters of a user “nagios” to

•             Min password age : 2 days
•             Max password age : 7 days
•             Password expiration warnings: 2 days before password expires
•             Password inactive [-1]: 0 same day account is locked after password expiry.
•             A/C expiration date : 2011-12-31 (dec 31^st 2011)

# chage nagios

[root@linuxelearn ~]# chage nagios Changing the aging information for nagios Enter the new value, or press ENTER for the default         Minimum Password Age [0]: 2         Maximum Password Age [99999]: 7         Last Password Change (YYYY-MM-DD) [2016-08-14]:         Password Expiration Warning [7]: 2         Password Inactive [-1]: 0         Account Expiration Date (YYYY-MM-DD) [1969-12-31]: 2016-12-25 [root@linuxelearn ~]#

View account password detail information:

To see account password detail information such as expiry date and time, enter:

# chage -l <username>

To see account password parameter info for nagios :

# chage -l nagios

[root@linuxelearn ~]# chage -l nagios Last password change                                    : Aug 14, 2016 Password expires                                        : Aug 21, 2016 Password inactive                                       : Aug 21, 2016 Account expires                                         : Dec 25, 2016 Minimum number of days between password change          : 2 Maximum number of days between password change          : 7 Number of days of warning before password expires       : 2 [root@linuxelearn ~]#

The second method is for, if you want to change a particular field of password aging policy

# change <option> <value> <username>

The options which can be used are as follows

•             -m foe Min password age
•             -M for Max password age
•             -d for last time the password is changed.
•             -W password expiration warnings
•             -I Password inactive [-1 means inactive].
•             -E A/C expiration date

Let’s see how to change only the account expiration date

[root@linuxelearn ~]# chage -E 2017-1-1 nagios [root@linuxelearn ~]#

[root@linuxelearn ~]# chage -l nagios Last password change                                    : Aug 14, 2016 Password expires                                        : Aug 21, 2016 Password inactive                                       : Aug 21, 2016 Account expires                                         : Jan 01, 2017 Minimum number of days between password change          : 2 Maximum number of days between password change          : 7 Number of days of warning before password expires       : 2 [root@linuxelearn ~]#

Likewise you can use any option listed above and change any particular field in password aging parameters.

You Must have to Read This...

• How to create or add a new user in Linux and Unix 
• How To Search a File In Linux /Unix or Use Of FIND Unix Command
• File Handling Unix commands, Basic Unix commands / Linux commands
• How many types of files are there in Linux/Unix and what are they?

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