security file setup location?

[Scott Ruckh]

-- 

This is what you said Nitin
> mcclnx mcc wrote:
>
>>I tried to  setup  all user need change password every
>>30 days, but can NOT find  which file to modify.  I
>>search /etc/security and /etc/deafult .  It is not
>>there.
>>
>>Can anyone tell me where is security file?
>>
>>Thanks
>>
>>
> The file which holds all this information is /etc/shadow. Instead of
> modifying the file manually use "chage" and "passwd" command. To check
> available options with chage command see man pages.
>
> --Nitin
>

/etc/login.defs contains the information for password policy.

As already mentioned you should also 'man chage' to see how it can be used
for user administration (relating to password policy)