Change user password linux with root

How to change root password in Ubuntu Linux

I am a new Ubuntu Linux server admin. How can I change root password in Ubuntu Linux server using the bash shell over ssh based session?

By default, the root user account password is locked in Ubuntu Linux for security reasons. As a result, you can not login using root user or use a command such as ‘su -‘ to become a SuperUser.

Tutorial details
Difficulty level	Easy
Root privileges	Yes
Requirements	Ubuntu
Est. reading time	1m

You need to use the passwd command to change the password for user accounts on Ubuntu Linux. A typical user can only change the password for his/her account only. A SuperUser (root) can change the password for any user account. Your user account info stored in /etc/passswd and an encrypted password stored in /etc/shadow file.

How to change root password in Ubuntu

The procedure to change the root user password on Ubuntu Linux:

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1. Type the following command to become root user and issue passwd:
   sudo -i
   passwd
2. OR set a password for root user in a single go:
   sudo passwd root
3. Test it your root password by typing the following command:
   su —

How to disable your root account on Ubuntu

One can disable the root account by typing the following command:
$ sudo passwd -dl root
OR
$ sudo passwd —delete —lock root
Sample session from the above commands:

Understanding passwd command option

• -d OR —delete : Delete a user’s password (make it empty for root user). This is a quick way to disable a password for an account. It will set the named account passwordless.
• -l OR —lock : Lock the password of the named account such as root. This option disables a password by changing it to a value which matches no possible encrypted value (it adds a ‘!’ at the beginning of the password)
• root : Lock and disble root account i.e. re-disabling your root account

A note about root password on an Ubuntu server/desktop

Enabling the root account by setting the password is not needed. Almost everything you need to do as SuperUser (root) of an Ubuntu server can be done using sudo command. For example, restart apache server:
$ sudo systemctl restart apache2
You can add additional user to sudo by typing the following command:
$ sudo adduser sudo
For example, add a user named tom to sudo:
$ sudo adduser tom sudo
You can in as another user say logging as tom from jerry account:
< jerry@nixcraft >$ sudo -i -u tom
When prompted enter jerry’s password i.e. the password being asked for is your own, not tom’s. For more info see “How to create a new sudo user on Ubuntu Linux server” and RootSudo.

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How do I change a user password in Ubuntu Linux?

W e recently switched from Windows server operating system to Ubuntu Linux operating system at work. I am a developer by profession and do not know much about Linux. I need to change the sftp/ssh user account password on Ubuntu. How do I change a user password in Ubuntu Linux?

Introduction – Your Ubuntu Linux account information stored in a file named /etc/passwd and encrypted password in /etc/shadow . This page explains to you how to change the Ubuntu Linux root and user account password using the passwd command line.

Tutorial details
Difficulty level	Easy
Root privileges	Yes
Requirements	Ubuntu Linux
Est. reading time	2 minutes

How to change a user password in Ubuntu

1. Open the terminal application by pressing Ctrl + Alt + T
2. To change a password for user named tom in Ubuntu, type:
   sudo passwd tom
3. To change a password for root user on Ubuntu Linux, run:
   sudo passwd root
4. And to change your own password for Ubuntu, execute:
   passwd

How to change a root (superuser) password in Ubuntu

Firstly, open a terminal window. If you want to change the password for remote Ubuntu server, log in using the ssh command:
ssh user@ubuntu-server-ip
ssh vivek@ubuntu-webserver-1
Type ‘sudo -i’ at the command prompt, and Enter key:
sudo -i
Type the current user password and press Enter key. Finally type NA command and press Enter to change password for root user:
passwd

Change password for root user on Ubuntu

How do I change the user account password on Ubuntu?

Again open a terminal window. Type the following command to change the password for regular Ubuntu user account named jerry:
sudo passwd < userNameHere >
sudo passwd jerry ## ##
sudo passwd vivek ## ##

How to change the user Password in Ubuntu Linux

Deleting a user password

Users will not be able to log in when the password is deleted or expired on Ubuntu Linux.

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The syntax is as follow to remove the password for the account called tom:
sudo passwd -d tom
## OR ##
sudo passwd —delete jerry
You will see confirmation on screen as follows:

To set up a new password when deleted, run:
sudo passwd -d tom
We can also force expire the password for the named account jerry. Open the terminal and then type the following command:
sudo passwd -e jerry
sudo passwd —expire jerry
When user login they will be forced to reset their credentials when you use the -e / —expire option:

Linux locking an account

sudo passwd -l
sudo passwd -l tom

Linux unlocking an account

sudo passwd -u
sudo passwd -u tom

Conclusion

This quick tutorial taught you how to change the Ubuntu Linux root user and other user account password using the passwd command. You must root user to change the password for all other users, however users can change their password without sudo access. For more info see the passwd command help page using the man command man passwd

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For your own password:
passwd
For root password:
sudo passwd root

FYI, we don’t set root password on Ubuntu for security reasons. One user will be added to the ‘sudo’ group and that will act as admin user. This ensures safety as root account without password is locked and cannot be used for ssh.

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How to Change User Password in Ubuntu [Beginner’s Tutorial]

Last updated October 23, 2020 By Abhishek Prakash 25 Comments

Want to change root password in Ubuntu? Learn how to change the password for any user in Ubuntu Linux. Both terminal and GUI methods have been discussed.

When do you need to change the password in Ubuntu? Let me give you a couple of scenarios.

When you install Ubuntu, you create a user and set a password for it. It could be a weak password or perhaps a bit too complicated and you want to change it.

If you are a sysadmin, you may need to change the password for other users on your system.

You may have a few other reasons for doing this. Now the question comes, how to change the password for a user in Ubuntu or Linux?

In this quick tutorial, I’ll show you the command line and the GUI ways of changing passwords in Ubuntu.

Change user password in Ubuntu [Command Line]

Changing user password in Ubuntu is dead simple. In fact, it’s the same with any Linux distribution because you use the generic Linux command called passwd for this purpose.

If you want to change your current password, simply run this command in a terminal:

You’ll be asked to enter your current password and the new password twice.

You won’t see anything on the screen while typing the password. This is perfectly normal behavior for UNIX and Linux.

Since this is your admin account, you just changed the sudo password in Ubuntu without even realizing it.

If you want to change password for some other user, you can do that as well with the passwd command. But in this case, you’ll have to use sudo.

If you changed your password and forgot it later, don’t worry. You can easily reset Ubuntu password.

Change root password in Ubuntu

By default, the root user in Ubuntu doesn’t have a password. Don’t be surprised. You don’t use the root user in Ubuntu all the time. Confused? Let me explain it to you quickly.

While installing Ubuntu, you are forced to create a user. This user has admin access. This admin user can gain root access using the sudo command. But it uses its own password, not the root account’s password (because there is none).

You can set or change root password using the passwd command. However, in most cases, you don’t need it and you shouldn’t be doing it.

You’ll have to use sudo (with an account with admin privileges). If the root password has no password set up previously, it will ask you to set it up. Else, you can change it using the existing root password.

Change Ubuntu password using GUI

I have used GNOME desktop with Ubuntu 18.04 here. The steps should be more or less the same for other desktop environments and Ubuntu versions.

Go to Menu (press Windows/Super key) and search for Settings.

In the Settings, scroll down a bit and go to Details.

In here, click on Users to access all the available users on your system.

You can select any user you want, including your main admin account. You need to unlock the users first and then click the password field.

You’ll be asked to set the password. If you are changing your own password, you’ll have to enter your current password as well.

Once done, click on the Change button on the top. That’s it. You have successfully changed user password in Ubuntu.

I hope this quick little tip helped you to change user password in Ubuntu. If you have questions or suggestions, please leave a comment below.

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