Knowledge Base

CentOS Stream 8 Update Commands

CentOS Stream 8 Update Commands

CentOS Stream 8 is different from traditional CentOS versions as it follows a rolling-release model, meaning it receives continuous updates. For this reason, it's important to regularly update the system to maintain stability and security. Below are the basic commands used to update a CentOS Stream 8 system, along with their explanations.

1. Update All System Packages

To upgrade all available packages on your system to the latest versions, use the following command:

dnf update -y

This command checks for all upgradable packages, downloads, and installs them. The "-y" flag automatically answers "yes" to any confirmation prompts.

Alternatively, you can also use:

dnf upgrade -y

This performs a similar update process and brings the system up to date.

2. Update a Specific Package

If you want to update only a specific package, use:

dnf update package_name

For example, to update only the Apache HTTP server:

dnf update httpd

3. Kernel Update

Kernel updates are usually included in the general system updates in CentOS Stream 8. However, after a kernel update, a system reboot is required. You can reboot with the following command:

reboot

4. Clear DNF Cache (Optional)

To remove cached data and clean up unnecessary files after updates, you can run:

dnf clean all

This command deletes unused package files from the cache.

5. Check for Available Updates

To view a list of packages that can be updated, without actually installing them, use:

dnf check-update

This lists the available updates for your system.

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By running these commands regularly, you can keep your CentOS Stream 8 system secure and up to date. In server environments, it's a good practice to schedule these updates weekly or even daily using automated tasks.