Now, if you're happy with your editing, type in :w Enter to write the file and :q Enter to exit vi. (vi!) hit Escape to return to command mode. If you specify a negative value, the timeout will never expire. If you specify 0 you will always be asked the password. Where X is the timeout expiration in minutes. (vi!) press the A (capital "a") key to move at the end of the current line and enter editing mode (append after the last character on the line). Use the arrow keys to move to the end of the Defaults line. (Vi specific instructions noted with (vi!). You're now a super user editing one of the most important files on your system. This opens an editor and points it to the sudoers file - Ubuntu defaults to nano, other systems use Vi. I'll lay out all examples but be warned it is very risky any way you do this although this way is much safer: sudo visudo Root sudo timeouts are the easiest and safest way of doing this. See /etc/sudoers.d/README and man sudoers for more information. Similarly, one file can be used to manage multiple directives: echo "username ALL=(ALL:ALL) NOPASSWD: ALL" | sudo tee -a /etc/sudoers.d/local echo "otheruser ALL=(ALL:ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/otheruser If you want to do that for a different user, just replace both instances of $USER with some other username in the above command. This will create a file called /etc/sudoers.d/$USER (where $USER is the username of the user that you were logged in as when you ran that command), making it clear which users are granted permission. To make the currently logged in user a a sudoer and make sudo not prompt them for a password, use echo "$USER ALL=(ALL:ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/$USER This separates local changes from the default policy and saves time in case the distribution sudoers file changes. The preferred way to grant individual (or group) permissions would be to add files under /etc/sudoers.d You'll still be prompted for your password if you (for example) try to install a package from the software center This only applies, to using the sudo command in the terminal. YOUR_USERNAME_HERE ALL=(ALL) NOPASSWD: ALLĪfter this you can type sudo in a Terminal window without being prompted for the password. # See sudoers(5) for more information on "#include" directives: # Allow members of group sudo to execute any command # Members of the admin group may gain root privileges # See the man page for details on how to write a sudoers file.ĭefaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin" # Please consider adding local content in /etc/sudoers.d/ instead of # This file MUST be edited with the 'visudo' command as root. Save and close the sudoers file (if you haven't changed your default terminal editor (you'll know if you have), press Ctl + x to exit nano and it'll prompt you to save).Īs of Ubuntu 19.04, the file should now look something like # Where $USER is your username on your system. In the bottom of the file, add the following line: $USER ALL=(ALL) NOPASSWD: ALL Open a Terminal window and type: sudo visudo You need to consider any security consequence of allowing a sudo command execute without a password.ġ.You can configure sudo to never ask for your password. This can be achieved by editing /etc/sudoers file and setting up correct entries. This is useful for scripting or any other purpose. Sometimes you may need to run a command with root privileges, but you do not want to type a password using sudo command. You can delegate common tasks such as reboot the server or restart the Apache or make a backup using sudo for unprivileged users.īy default, sudo needs that a user authenticates using a password before running a command. Typically as a root user or another user. Sudo (“superuser do”) is nothing but a tool for Linux or Unix-like systems to run commands/programs as another user. Here is how you can run sudo without having to enter your password. If you are the only sysadmin or developer, you can skip password when you run sudo command.
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