Es scheint, als ob Passwortalterungslimit für die regelmäßige Änderung des Passworts verantwortlich ist. Aber meine Fragen sind:
Beachten Sie bei Bedarf, dass ich Ubuntu 12.10
verwendeIt is probaly called "password age limit". You can set it with the x option from passwd
passwd -x 7 $USER
will force you to issue a new password for the current user every 7 days.
-x, --maxdays MAX_DAYS
Set the maximum number of days a password remains valid. After MAX_DAYS, the password is required to be changed.
Password aging is a mechanism that allows the system to enforce a certain lifetime for passwords. While this may be moderately inconvenient for users, it ensures that passwords are changed occasionally, which is a good security practice. Most Linux distributions do not enable password aging by default, but it's very easy to enable.
By editing /etc/login.defs, you can specify a few parameters to set the default settings for password aging:
PASS_MAX_DAYS 99999
PASS_MIN_DAYS 0
PASS_WARN_AGE 7
change These values as you want. change 9999 to 7 to enforce all users to change their password every 7 days.
The PASS_MAX_DAYS parameter in /etc/login.defs allows you to force passwords to expire once they reach a defined age. It is recommended that the PASS_MAX_DAYS parameter be set to less than or equal to 90 days.