Always Launch Terminal as root User (sudo) in Ubuntu

su other_username

A few things you should know here:

  • If you were logged in as a normal user, you’d be asked to enter the password of the other user
  • The root user can switch to other users without needing the passwords of those accounts
  • If you have sudo access, you can use sudo su other_username to switch user without the password of the other user
su -l other_username
compgen -u

I was trying to create a new file with two commands for xrandr so I could have a custom resolution, but after the recent reboot, I’m stuck on the black screen (tty1 thing)

So far I’ve tried using command line in the recovery menu but since it’s root, I won’t be able to view the history of the previously used commands and using the «exit» command will bring back the menu.

How can I achieve that? Unfortunately I cannot use live flash / cd to fix this because there’s something wrong with my pc bios. Any help and suggestion is highly appreciated.
P.S: I used google’s web history to find out which websites I’ve visited so I could find what command I used, but failed; I couldn’t find it.

How to logout root user in Linux

How to exit sudo su mode

sudo -k Note that you’re not running sudo to need to exit it, rather sudo remembers the last time you authenticated and doesn’t require re-authentication if that’s recent enough. This command will reset timestamp to the epoch.

Su: Authentication failure

Open Terminal and type sudo passwd root. Now terminal will ask for your password type your existing password. After you entered your correct password. Now the terminal will ask for new password. This will be used as a root password. You can keep this password the same as Sudo password. Re-enter the password to confirm.

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How to switch from root to normal user in Linux

How to go back from root to user in Ubuntu

How to exit root user in Linux

Sudo command


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  • Switch to Root User
  • Logging In as the Root User
  • FAQs
  • Conclusion

Step 1: Open the Terminal application.

Use your preferred method to open the Terminal application. 

Type the command as shown below and then hit the return key.

Always Launch Terminal as root User (sudo) in Ubuntu

Step 3: Enter your password. 

Enter the password and hit the return key.

Step 4: Perform whatever tasks you need to perform.

Always Launch Terminal as root User (sudo) in Ubuntu
Always Launch Terminal as root User (sudo) in Ubuntu

Step 5: Exit 

Always Launch Terminal as root User (sudo) in Ubuntu

sudo su – root

Always Launch Terminal as root User (sudo) in Ubuntu

You will need to enter your password just as you did in the previous procedure. Notice in the above login, the prompt is slightly different. It still has the # symbol, but it does not have the color scheme or show the current directory. 

This is because it uses the root’s environment variables instead of my original environment variables. If we look at the current directory, you will also notice that we are now in the root’s home directory instead of the directory I was originally in.

Always Launch Terminal as root User (sudo) in Ubuntu

Below are some frequently asked questions about running Terminal as root.

sudo su root

Notice there is no – in this command. As with the other commands, you will also need to enter your password here.

What does sudo stand for?

Why Do I need to exit after working as root? Why not just work as root all the time?


Important: Before even explaining how you can launch the Terminal every time in sudo mode, we would like to emphasize as much as we can that it is a very unsafe thing to do.

Anyways, if you really, really are in dire need of a scenario where you want to avoid typing ‘sudo’ and its password with your commands, we will present a solution. But before that, we will also give you a safe alternative so that you can at least save yourself from typing your sudo password for one Terminal session.

We have run the commands and procedures mentioned in this article on a Ubuntu 18.04 LTS system.

First, a Safer Alternative

$ sudo -i

sudo -i command

# id

id command

After you are done with running all the commands, exit the root prompt by typing the exit command:

# exit

id after exit

Launching the Terminal in root mode

Although unsafe, here we will present a solution that ensures that you are already logged in as root whenever you open the Terminal.

$ sudo visudo
<username> ALL=NOPASSWD: ALL

Editing sudo permissions with visudo command

Save the file by using the Ctrl+x shortcut.

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Now is the time to work with the keyboard shortcuts. We will first disable the default shortcut that opens the Terminal. Open the Keyboard shortcuts view from your system Settings. Then, from the Launchers section, click on the Launch Terminal shortcut.

Set keyboard shortcut

At the above view, hit Space+backspace to disable this shortcut.

Command: sudo gnome-terminal

Add custom shortcut

Then Set the shortcut as ctrl+Alt+T. Click the Add button and the new shortcut is active.

Now whenever you want to launch the Terminal as root, use the Ctrl+Alt+T shortcut to launch it.

Using root terminal

In the above image, you can see that I ran the apt-get update command without having to specify sudo and its password.

Please do not forget to revert all these changes when you are done with the scenario that requires such a bold step to be taken. After all, the security of your files and your overall system is more important to you than having to type sudo and its password.

Есть и другой, ещё более «немногословный» способ сообщить системе, что пользователь хочет завершить текущий сеанс работы. Нажав Alt+F2 Мефодий попадёт на вторую виртуальную консоль, где всё ещё открыт сеанс для пользователя « methody » и нажмёт сочетание клавиш Ctrl+D, чтобы прекратить и этот сеанс.

Как выйти из пользователя Линукс?

Откройте командную строку Ubuntu, Терминал, или посредством поиска средства запуска приложения или посредством ярлыка Ctrl+Alt+T. При выполнении этой команды диалоговое окно появляется, который позволяет Вам выйти из системы прямо тогда путем нажатия кнопки Log Out.

Как выйти из root в терминале?

в терминале. Или вы можете просто нажать CTRL + D ,. Просто введите exit , и вы покинете корневую оболочку и получите оболочку от своего предыдущего пользователя.

Как выйти из Gnome?

Когда вы завершаете сеанс GNOME позволяет вам просто закончить сеанс (и не прекращать работу системы), перезапустить или полностью остановить систему. Чтобы выйти с помощью Главного меню на панели, нажмите кнопку Главное меню и выберите Завершение сеанса.

Команда Su в Linux (Смена пользователя)

  1. Использование su — это самый простой способ перейти к учетной записи администратора в текущем сеансе входа в систему. …
  2. Вам будет предложено ввести пароль пользователя root, и в случае аутентификации пользователь, выполняющий команду, временно станет пользователем root.

Как выйти из системы в Ubuntu?

Вы можете использовать Ctrl + Alt + Del сочетание клавиш в Ubuntu чтобы вывести меню выхода из системы.

Как выйти из под sudo?

  1. Введите exit . …
  2. Если вы запустите sudo su , это откроет оболочку в качестве суперпользователя. …
  3. su используется для входа в учетную запись root, чтобы выйти из нее, используйте Ctrl + D или введите exit.

Что означает команда sudo в Linux?

Команда sudo предоставляет возможность пользователям выполнять команды от имени суперпользователя root, либо других пользователей.

Как зайти под другим пользователем в терминале?

Как сменить пользователя в терминале Убунту?

Сначала кликните по значку выключения в правом верхнем углу экрана и выберите там пункт Завершить сеанс или Сменить пользователя:

  1. Затем подтвердите завершение сеанса или смену:
  2. Далее перед вами откроется обычное окно входа, где вы сможете выбрать пользователя из списка или ввести его логин в поле ввода.
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Get Temporary root access through the sudo command

$ sudo nano adduser.conf

What is a Root user?

About the Article

$ su -

su - command

The system will ask you the password for root. Enter the password and hit Enter.

Ideally, you now will be able to see the “#” sign in front of your command prompt. This would mean that you are now logged in as root.

Su command - authentication failure

You can read later in the article about how to lock/unlock the root account.

sudo -s

Let us explain this with an example.

$ nano /etc/adduser.conf

Editing /etc/adduser.conf

You can only edit it if you are logged in as root or if you are using the sudo command to temporarily avail root privileges.

Content of /etc/adduser.conf file

We can make any changes to the file and save the changes by hitting Ctrl+X.

Note: It is very important to stay careful while making any sensitive changes to your system files while logged in as root. Any undue change to the system files can mess up with your entire system settings.

# exit

Always Launch Terminal as root User (sudo) in Ubuntu

Switch to root user

su

When asked, enter the root password:

[email protected]:/root$ su
Password: 
[email protected]:~#
sudo su

When asked for the password, enter your account’s password:

[email protected]:~$ sudo su
[sudo] password for abhi: 
[email protected]:/home/abhi# 

Run a command as another user

su -c command_to_run user_name

The command should be a single argument and hence you should keep it under quotes.

[email protected]:/home/abhishek# su -c "touch a.txt" abhishek
[email protected]:/home/abhishek# ls -l a.txt
-rw-rw-r-- 1 abhishek abhishek 0 Aug 23 07:56 a.txt
[email protected]:/home/abhishek# 

I hope you like this handy Ubuntu tutorial.


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Unlock/lock root account

Locked root account

$ sudo passwd root

Ublock root account

The system will ask you to enter a new UNIX password twice. After that, it will update the root password and the account will be unlocked.

$ sudo passwd -dl root

Lock the root account

How to change the root password (An alternative approach)?

$ sudo -i

The system will prompt you to enter the current sudo password. Please enter the password and hit Enter.

sudo -i command

$ passwd

Run passwd command as root user

Switch to another user from a regular user

su other_username
Change users in Ubuntu
sudo su other_username
Change to other user with sudo

Switching users into their login shell

su -l other_username
Switch user with login shell

You can use -p option instead of -l to preserve the environment instead of testing them in the new shell.

Forgot your own password or have to reset it for others? Here’s how to change the password in the Ubuntu command line.

Always Launch Terminal as root User (sudo) in Ubuntu

Switching to a normal user from root user

su other_username
Switching to other user in Ubuntu
exit

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Always Launch Terminal as root User (sudo) in Ubuntu

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