In Unix or Linux system, you need to use “passwd” command to change or set user’s password, when you update or set password, it will update shadow file. In this post I will show you on how to set or change linux use password:
Syntax
passwd [options]
If you login the system with normal user, then you just only can change the password for his or her own password, it login in the system with root user, then it can change any user’s password.
Change Normal User Password
issue the following command:
$passwd Changing password for vivek (current) UNIX password: Enter new UNIX password: Retype new UNIX password: passwd: password updated successfull Change other user's password
Firstly you must login the system with root user, then run “passwd” pass user name you want to change password, such as, change “test” user’s password, issue the following command:
#passwd test Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully