Keeping your system up-to-date is crucial for security and stability. This guide will show you how to update your CentOS or AlmaLinux system using the yum package manager.
1. Open Your Terminal
To start, you need to open your terminal. You can do this by:
- Using SSH to connect to your server if you’re working remotely.
- Opening the terminal application on your local machine if you’re working directly on your system.
2. Update Your System
Run the following command to update all packages on your system:
sudo yum update -y
Here’s what this command does:
sudo : Executes the command with superuser (root) privileges.yum : The package manager used to manage software packages on CentOS/AlmaLinux.update : Tellsyum to update all installed packages to their latest versions.-y : Automatically answers “yes” to all prompts, so the update proceeds without asking for confirmation.
3. Wait for the Update to Complete
The command will download and install updates for all packages. This may take some time depending on the number of packages and your internet speed. The terminal will display progress messages and instructions as it updates your system.
4. Reboot if Necessary
Some updates may require a system reboot to take effect. If prompted to reboot, or if you think a reboot is necessary, you can use the following command:
sudo reboot
This command will restart your system and apply the updates.
5. Verify the Update
After updating and rebooting, you can verify that your system is up-to-date by checking the version of installed packages or using:
yum list updates
This command will list any remaining packages that have updates available.
Important Tips
- Always ensure you have backups before performing system updates.
- Run updates during off-peak hours to minimize impact on users.
- Regularly check for updates to keep your system secure and stable.
That’s it! You’ve successfully updated your CentOS or AlmaLinux system using yum. Regular updates help maintain system security and performance.