pam_tally --user=cyberninja --reset

[me@mordor ~]$ ssh frodo@mordor

Welcome to SUSE Linux Enterprise Server 11 SP2  (x86_64) - Kernel r (l).


Account locked due to 29 failed logins
Password:
Account locked due to 30 failed logins
Password:

me@mordor:~> sudo passwd -S -a | grep frodo
frodo PS 01/01/1970 1 90 7 180

me@mordor:~> sudo /sbin/pam_tally2 --user frodo
Login           Failures Latest failure     From
frodo             0

me@mordor:~> sudo /sbin/pam_tally --user frodo
User frodo    (500)   has 32

me@mordor:~> sudo /sbin/pam_tally --user frodo --reset
User frodo    (500)   had 32
me@mordor:~> sudo /sbin/pam_tally --user frodo
User frodo    (500)   has 0

usermod --expire 9999