![]() Now, add the user to the wheel group and grant it sudo access. If you installed Arch Linux from the base image, sudo is most likely not pre-installed with the default system. Make sure to replace username with the actual username you want to grant sudo access to. visudoĪdd the following line at the end of the file – username ALL=(ALL) NOPASSWD:ALL This method is equally applicable to any other Linux distribution. To grant sudo privileges to a user, you can directly modify the sudoers file and add the following line. To have sudo privileges in CentOS and other Red Hat Enterprise Linux derivatives, the user must be assigned to the wheel group – sudo usermod -aG wheel username Add user to sudoers file or sudo group For Ubuntu or its derivatives sudo usermod -aG sudo username For CentOS or other RHEL’s derivatives Please use any of the following methods to grant user sudo access, depending on the Linux distribution you’re using. If you’re in a rush and need to fix the issue without knowing the context of the error, here’s how. The error occurs because the logged-in user lacks the ability to execute commands as sudo. If you have recently established a new user on your Linux distribution, you may see the error “ username is not in soders file” when using sudo. The problem is related to user permissions and can be simply resolved with a single command. ![]() Try running printf '%s\n' | LANG=C sort to see whether your current language prints AaBbCc etc or ABC then abc to determine what the best "last" letter prefix to use would be.In this article, we will fix a common error that new Linux users encounter username is not in sudoers file. This is because depending on your language settings the "lexical sorting" the shell uses sorts numbers first and then may interleave upper and lowercase when sorting in "ascending" order. You can control the file name ordering by using a prefix of 00-99 or aa/bb/cc, though also keep in mind that if you have ANY files that don't have numeric prefix, they will load after the numbered files, overriding the settings. Keep in mind that the ordering of the FILE NAMES and of the RULES within the file is very important, the LAST one loaded wins, whether it is MORE or LESS permissive than the previous entries. If you find yourself creating lots of these sudoers.d files then perhaps you will want to create them named per user so they are easier to visualize. You can run sudo -l to see the permissions that your user has been granted, if any of the user specific NOPASSWD commands appear BEFORE any %groupyouarein ALL=(ALL) ALL command in the output you will be prompted for your password. Then save and exit and visudo will warn you if you have any syntax errors. Gatoatigrado ALL=NOPASSWD: /bin/set-slow-cpufreq You should also always use visudo to edit the file(s). Ideally if you are customizing what commands can be run via sudo you should be making these changes in a separate file under /etc/sudoers.d/ instead of editing the sudoers file directly. (sudo visudo)Īlso, having another window open switched to the root user allows you to recover any mistakes you might make while changing the sudoers file. Rather than moving my entry below the sudo line I simply removed the line I had previously added and then added NOPASSWD to the entry for %sudoĪgain only use nopasswd if you really need it (In my case it was precisely what I needed, for most users requiring a password for sudo activity is best)Īlways edit sudoers with visudo. The group sudo shows up in sudoers after the entry for my username. I was still having to password authenticate.Įnzotib's answer is the key to what's going on. NOTE if you use nopasswd on your laptop you must always lock your computer as you walk away or else a casual attacker can compromise a lot while you're getting up to put cream in your coffee I had then manually added myself to the sudoers file using sudo visudo: my_username ALL=(ALL:ALL) NOPASSWD:ALL The Ubuntu installer prompts for a non-root admin user which gets added to the group sudo. ![]() I have enabled full disk encryption (otherwise an attacker with physicall access can do anything he or she wants) I want to auth with pub key only (I will unset the password so that the "have something, know something" scheme will be a password protected keypair -root login is of course disabled entirely) My situation is I'm setting up a remote system that will run headless. ![]()
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