How to change passwords periodically

Hi,

I need to enforce that every users change their login and SVN passwords periodically. How can I do so?

Thanks!
wsyyAsked:
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Jan SpringerCommented:
passwd -x
0
wsyyAuthor Commented:
[root@server ~]# passwd -x
passwd: bad argument -x: missing argument
0
hossamshaabanCommented:
to force user to change his password,

# chage -M 0 username
0
wsyyAuthor Commented:
what does the "0" do?

seem like the password is forced to change every day.

I would like to change it every 30 days. how can i do then?
0
hossamshaabanCommented:
so you need to change it to 30 instead of 0
0

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