How to Use sudo Commands Without Password in Linux
The sudo command is an important tool for Linux users, allowing them to perform administrative tasks without logging in as the root user. However, by default, sudo requires the user to enter their password before executing a command. This can be inconvenient, especially if you need to perform several actions as root. Fortunately, there is a way to configure sudo to allow certain users to run commands without entering a password.
Step 1: Add User to sudo Group
Before you can configure sudo to allow a user to run commands without a password, you must first add that user to the sudo group. To do this, you need to open the terminal and enter the following command:
sudo adduser username sudo
Replace “username” with the account name of the user you want to grant sudo privileges to. Once you have entered this command, the user will be added to the sudo group, and they will be able to run sudo commands.
Step 2: Edit sudoers File
Next, you’ll need to edit the sudoers file to allow your user to run sudo commands without entering a password. Open the terminal and enter the following command:
sudo visudo
This will open the sudoers file in the terminal. Look for the line that reads:
%sudo ALL=(ALL) ALL
This is the line that grants sudo privileges to the members of the sudo group. You’ll need to add a new line below this one that specifies that the user should be able to run sudo commands without a password. For example, if you want to allow the user “jane” to run all sudo commands without a password, you would add the following line:
jane ALL=(ALL) NOPASSWD:ALL
Be sure to replace “jane” with the username of the user you want to grant sudo privileges to. Save the changes to the sudoers file and exit the editor.
Step 3: Test sudo Without Password
Now that you’ve made the necessary changes to the sudoers file, you can test whether the user can run sudo commands without a password. Open a new terminal window and log in as the user you granted sudo privileges to. Try running a command that requires sudo, such as:
sudo apt-get update
If you are able to run the command without entering a password, then everything is working correctly.