modprpw command is used to modify protected password database. modprpw updates the user’s protected password database settings. This command is available only to the superuser in a trusted system. Usage other than via SAM, and/or modifications out of sync with /etc/passwd or NIS+ tables, may result in serious database corruption and the inability to access the system.
1. Check whether user id is locked.
# /usr/lbin/getprpw <USER-ID>
Additional note:
• Check ‘alock‘ and ‘lockout‘ field. If the account is not locked you will see:
alock=NO lockout=0000000
• If an account is locked for any reason you will see a ‘1’ in the lockout field. For example:
lockout=00010000
means account is locked for exceeding unsuccessful login attempts.
2. Logon as superuser.
# sudo su –
3. Unlock user id
# /usr/lbin/modprpw -k <USER-ID>
