How to Lock an user account??????

Using help of usermod command we lock a user account.Only a super user can used usermod command.

Syntax:-

#usermod -L [username]

L-Lock user account.

Example:-

#usermod -L john

here john is a user name.

Using help of usermod command we unlock a user account.

Syntax:-

#usermod -U [user name]

U-unlock user account.

Example:-

#usermod -U john

here john is a username.