Sudo Not Found CentOS: Understanding and Using the DNF Package Manager

When working with your CentOS 8 or Fedora server, you may encounter situations where you need to upgrade specific packages or ensure that all installed packages are up-to-date. In this guide, we will explore the basics of using the DNF package manager, including how to upgrade individual packages and lists available updates.

To begin, it's essential to understand the `sudo` command. This command allows you to execute a command with elevated privileges, which is necessary for installing or updating packages. If you're not familiar with the `sudo` command, refer to the Linux Users and Groups guide for more information.

To upgrade a specific package, use the following command:

```

sudo dnf upgrade

```

This command also lists any installed packages that are becoming obsolete. You can list the installed packages for which updates are available by using the following command:

```

sudo dnf check-update

```

Before running these commands, make sure you have a compatible system running on CentOS/RHEL 8, AlmaLinux 8, Rocky Linux 8, Fedora 22, or later versions of these distributions. If you don't yet have a compatible system, review the Creating a Compute Instance guide for assistance.

It's also important to note that some commands in this guide require elevated privileges and are prefixed with the `sudo` command. If you're logged in as the root user (not recommended), you can omit the `sudo` prefix if desired. However, it's generally recommended to use a standard user account belonging to the `sudo` group for security purposes.

Other Linux distributions that employ the DNF package manager can also be used. Before running the commands within this guide, make sure you have:

* A system running on CentOS/RHEL 8, AlmaLinux 8, Rocky Linux 8, Fedora 22, or later versions of these distributions.

* Login credentials to the system for either the root user (not recommended) or a standard user account belonging to the `sudo` group.

* The ability to access the system through SSH or Lish.

By the end of this guide, you should feel comfortable navigating all but the more advanced features DNF offers. This guide aims to familiarize you with the DNF commands you are most likely to encounter while working with your CentOS 8 or Fedora server.

As a successor to YUM, DNF has several enhancements, including increased performance, faster dependency resolution, and more complete documentation for its API. While YUM is no longer used on these distributions, the `yum` command still works in many cases due to compatibility with much of YUM's CLI. However, it's recommended to use DNF as the default package manager for new installations.

In conclusion, understanding and using the DNF package manager is essential for maintaining your CentOS 8 or Fedora server. With this guide, you should be able to navigate the basics of upgrading packages, listing available updates, and more. By following these instructions, you'll be well on your way to becoming proficient in using DNF for your Linux distribution management needs.

Sudo not found centos