September 2009
Beginner
942 pages
85h 34m
English
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Name
chage
Synopsis
chage [options]user
Change information about user password expirations. If run with no option flags, chage prompts for values to be entered; you may also use option flags to change or view information. Requires a shadow password file. An unprivileged user can only run chage with the -l option.
Options
- -d lastday, --lastday=lastday
Date of last password change. This may be expressed as a date in YYYY-MM-DD format, or as the number of days between January 1, 1970 and the last password change.
- -E expiredate, --expiredate=expiredate
Set the date when the account will be locked. This is not a date for password expiration, but for account expiration. It may be expressed in YYYY-MM-DD format or as a number of days since January 1, 1970.
- -I inactivedays, --inactive=inactivedays
If a password expires and the user does not log in for this number of days, the account will be locked and the user must contact a system administrator before logging in. Set to 0 to disable the feature.
- -l, --list
This flag is used without any others and causes chage to display the current password expiration attributes for the user.
- -m mindays, --mindays=mindays
Specify the minimum number of days between password changes. Default is zero, meaning that the user may change the password at any time.
- -M maxdays, --maxdays=maxdays
Maximum number of days between password changes.
- -W warndays, --warndays=warndays
The number of days before password expiration that a user will be warned to change passwords.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.