Overview
yum acts as a front-end for the RPM package management system, enabling users to search for and install packages from remote repositories, automatically handling necessary dependencies. This is significantly more convenient and safer than managing RPM files manually.
Key Features
- Package installation and updates
- Package removal
- Package search and information retrieval
- Automatic resolution of system dependencies
- Repository management
Key Options
The yum command provides various subcommands and options to perform different tasks.
Package Management
Information Retrieval
Other
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Description:
`yum` Executes the command.
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Usage Examples
Common tasks that can be performed using the yum command.
Install Nginx Package
sudo yum install nginxInstalls the Nginx web server package.
Update All Packages on the System
sudo yum updateUpdates all installed packages to their latest versions.
Remove Apache HTTP Server Package
sudo yum remove httpdRemoves the httpd package from the system.
Search for MySQL Related Packages
yum search mysqlSearches for packages whose name or description contains 'mysql'.
Check Nginx Package Information
yum info nginxDisplays detailed information about the Nginx package (version, repository, description, etc.).
List All Installed Packages
yum list installedOutputs a list of all packages currently installed on the system.
Clean Yum Cache
sudo yum clean allClears all downloaded package and metadata caches to free up disk space.
Tips & Notes
Useful tips and points to note when using yum.
Transition to dnf
- In recent versions of RHEL, CentOS Stream, and Fedora, dnf is used as the default package manager instead of yum. dnf has a similar syntax to yum and offers improved performance and dependency resolution capabilities. Existing yum commands are often symlinked to dnf for compatibility.
Repository Management
- yum manages repositories through `.repo` files located in the `/etc/yum.repos.d/` directory. When adding external repositories, ensure they are from trusted sources.
Security Updates
- It is important to regularly run `sudo yum update` to address system security vulnerabilities and maintain the latest features.