Which Linux utility is specifically used to display the number of failed authentication attempts for a user and optionally reset the counter that the pam_faillock module uses for account lockouts?
id
faillock
lastlog
chage
The correct utility is faillock. The pam_faillock module enforces the lockout policy, but the faillock command lets administrators query or clear the failure records stored in /var/run/faillock. Commands such as chage manage password-expiry information, id shows UID/GID data, and lastlog lists the most recent successful login for each user-none of these interact with the pam_faillock tally.
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