This example updates the Apache package: sudo yum update httpd To update a specific package, use the update command. You can list the installed packages for which updates are available using the following command: sudo yum list updates In fact, you are likely to see this command at the beginning of many installation guides and the like for CentOS. It is usually a good idea to run this command before you begin a new installation of any kind, ensuring that your installed packages are up to date. Use the following command to update your installed packages: sudo yum update If you’re not familiar with the sudo command, see the Linux Users and Groups guide. If you are logged in as the root use (not recommended), you can omit the sudo prefix if desired. Some commands in this guide require elevated privileges and are prefixed with the sudo command. Review the Setting Up and Securing a Compute Instance guide for assistance on creating and securing a standard user account. Login credentials to the system for either the root user (not recommended) or a standard user account (belonging to the sudo group) and the ability to access the system through SSH or Lish. Review the Creating a Compute Instance guide if you do not yet have a compatible system. Other Linux distributions that employ the YUM package manager can also be used. Before You Beginīefore running the commands within this guide, you will need:Ī system running on CentOS/RHEL 7, Fedora 21, or earlier versions of either distribution. And for those, you can find some helpful resources at the end of this guide. By the end, you should feel comfortable navigating YUM in all but its more advanced features. This guide aims to familiarize you with the YUM commands you are most likely to encounter. If you are interested in learning about the DNF package manager, see the Using the DNF Package Manager guide. It has largely been replaced by it successor Dandified YUM, also called DNF, on most newer RPM-based distributions, including CentOS 8, RHEL 8, and Fedora 22 (and later). YUM is the default package manager for CentOS 7 as well as older versions of RHEL and Fedora. It provides an easy-to-use interface on top of the low-level functions available in the RPM Package Manger (RPM). Yellowdog Updater, Modified, more commonly known as YUM, is a package management tool for a variety of Linux distributions.
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