User account Lock/Unlock / Disable and enable

User account Lock/Unlock / Disable and enable
Ex -
Username - testing

Lock command
=----------
passwd -l testing

or

usermod -L testing

unlock command
=================

passwd -u testing

or

usermod -U testing

Disable and Enable
====================


The following will lock an account

Code:
passwd -l testing

You could also change the users shell to /bin/false if you don't want them to log in


Code:
usermod -s /bin/false testing

Enable the account

usermod -s /bin/bash tesing