In the following section, we will discuss how to modify the sudo configuration in greater detail. Warning: Never edit this file with a normal text editor! Always use the visudo command instead! The visudo command opens a text editor like normal, but it validates the syntax of the file upon saving.
This prevents configuration errors from blocking sudo operations, which may be your only way of obtaining root privileges. Ubuntu, however, has configured visudo to use the nano text editor instead.
I have copied and pasted the file from Ubuntu This is a safety measure used to clear potentially harmful environmental variables from the sudo session. By default, this is the root account. This prevents using user paths which may be harmful. This means that our root user can run any command using sudo , as long as they provide their password. The next two lines are similar to the user privilege lines, but they specify sudo rules for groups. Here, we see the admin group can execute any command as any user on any host.
Similarly, the sudo group has the same privileges, but can execute as any group as well. It does begin with a , which usually indicates a comment. This is mainly meant for applications to alter sudo privileges upon installation.
The syntax for editing these files would be:. The most common operation that users want to accomplish when managing sudo permissions is to grant a new user general sudo access. This is useful if you want to give an account full administrative access to the system. The easiest way of doing this on a system set up with a general purpose administration group, like the Ubuntu system in this guide, is actually to add the user in question to that group.
For example, on Ubuntu We can grant a user these same privileges by adding them to the group like this:. Group names must start with a capital letter. I am the only one that uses and will ever use my computer. Is there any reason for me to edit the sudoers file? Is there a way for me to get a PDF version of this article? I liked it, and would like to keep a reference to it for future use. You can use the website, but I have a browser extension.
It saves websites as easy-to-print PDFs with adds and extra images removed. It also gives you a lot of control over what pages elements get removed. At least that was my understanding?
Affiliate Disclosure: Make Tech Easier may earn commission on products purchased through our links, which supports the work we do for our readers. What is the sudoers file? When do I need to edit the sudoers file? Is this article useful? Yes No.
Refer to these articles for the steps on how to give a user or group permission to run certain commands. Now, the user or group that has been granted permission to run certain commands can use the sudo command to issue commands that require elevated privileges.
Aliases can be used for each section. Let's take an example where multiple users need permission to run multiple commands on certain hosts using a certain user and group. For example, Tim and Tammy and Roger and Dawn need permission to execute the halt and init and poweroff and reboot and shutdown and telinit commands on I like using sudo , I'm not using Ubuntu anymore.
The first thing I do when I install a new Linux is to use visudo to edit the sudoers file. And I always give my account root rights, then I can run commands as root without switching users. The best way to understand the sudo command, and the rules in sudoers file, the funny way is by this comics. As you can see from this funny picture, using sudo command, makes the system obey any given order.
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