![]() The pub file is what goes on the servers, the private key ( id_rsa) is what stays with you and is how you identify yourself. First create your SSH Keypair by running ssh-keygen this will create an id_rsa and id_rsa.pub file.You can opt to protect keys with a passcode if you wish, but this can be left blank allowing totally password-less SSH access. You'll need to generate an SSH Keypair which will allow you to identify you as yourself without using a password. This assumes you already can successfully connect to your server via SSH. To make sure we haven't added extra keys that you weren't expecting. Now try logging into the machine, with "ssh and check in: Your identification has been saved in /home/not-marco/.ssh/id_rsa. Example ssh-keygenĮnter file in which to save the key (/home/not-marco/.ssh/id_rsa):Ĭreated directory '/home/not-marco/.ssh'.Įnter passphrase (empty for no passphrase): Then you'll need to copy the new key to your server: ssh-copy-id or if your server uses custom port no:Īfter the key is copied, ssh into the machine as normal: ssh can now login without entering a password from the particular machine you executed the commands at. Any questions or suggestions are always welcome.Execute this command (if you already have an SSH key, you can skip this step): ssh-keygen I hope you like this quick little tutorial about using sudo without password. You can configure sudo in a way that only commands of your choice can be run without password.įor example, if you want the apt update and apt upgrade to be run without entering the password for sudo in Ubuntu, here’s what you need to do.Īnd then add a line like this: user_name ALL=(ALL) NOPASSWD:/usr/bin/apt update, /usr/bin/apt upgrade Run only specific sudo commands without password Thankfully, there is a solution for that as well. It provides you some options to deals with the changes.īut it’s not a good practice to run all the sudo commands without password. (Q)uit and save changes to sudoers file (DANGER!) ![]() > /etc/sudoers: syntax error near line 3 <<<Į(x)it without saving changes to sudoers file When you try to save your changes, it performs a check and notifies if there is any syntax error. The visudo tool creates a new temp file where you can edit the sudoer file using the default text editor. ![]() This is why you a dedicated tool called visudo is used for editing sudo configuration file. If you make a syntax error while editing this file, the consequences can be fatal. Now, you may edit /etc/sudoers file manually in a text editor like Vim, however, that is not advised. Of course, you have to replace the user_name in the above command with your user name.Įxit the shell and enter again and you should see the changes reflected. All you have to do is to add a line like this in this file: user_name ALL=(ALL) NOPASSWD:ALL This will open the default text editor (Nano in Ubuntu) for editing this file. Use the following command to edit the /etc/sudoers file: sudo visudo Let’s see how to use sudo with no password.īut first, back up the sudoer file as a precautionary measure: sudo cp /etc/sudoers ~/sudoers.bak Execute all sudo commands without password Maybe, you should disable SSH access with password first. If you are on a server, you should be extra careful specially if you have SSH enabled. ![]() In Linux, you can change sudo configuration to run some or all command with sudo but without entering password. This is specially if you are the only user on the system or if you think some commands are okay to run without password. Some users may find it cumbersome to enter the password all the time. Which means that you’ll have to enter the password again if you run a command with sudo after fifteen minutes. The default timeout for the password is 15 minutes (in Ubuntu Linux). When you run a command with sudo, it asks for your account’s password. Most Linux distributions like Ubuntu, Debian, Fedora use the sudo mechanism to allow admin users to run commands with root privileges. Learn how to run some or all sudo commands without entering the password on Ubuntu or any other Linux distribution. ![]()
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