System Administration Guide: Naming and Directory Services (NIS+)

Setting a Password Age Limit in NIS+

The -max argument to the passwd command sets an age limit for the current password. In other words, it specifies the number of days that a password remains valid. After that number of days, a new password must be chosen by the user. Once the maximum number of days have passed, the next time the user tries to login with the old password a Your password has been expired for too long message is displayed and the user is forced to choose a new password in order to finish logging in to the system.

The max argument uses the following format:

passwd -x max username


For example, to force the user schweik to change passwords every 45 days, you would type the command:

station1% passwd -x 45 schweik