change linux root password code example

Example 1: linux change user password

passwd $user

Example 2: change linux user password

#if you dont't have your root password => then don't use sudo command

# passwd <username>
Current password:
New password:
Retype new password:
passwd: password updated successfully

Example 3: replace password root

Step 1: Open a Terminal Window.
    		Right-click the desktop, then left-click Open in terminal.
            Alternately, you can click Menu > Applications > Accessories > Terminal.
    Step 2: Change Your Root Password.
    		In the terminal window, type the following:
            	- sudo passwd root.

Example 4: how to change password in linux

# sudo passwd <username>
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully