February 2020
Intermediate to advanced
666 pages
15h 45m
English
Content preview from Mastering Linux Security and Hardening - Second Edition
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Updating Red Hat 7-based systems
With Red Hat-based systems, which include CentOS and Oracle Linux, there's no automatic update mechanism that you can set up during installation. So, with the default configuration, you'll need to perform updates yourself:
- To update a Red Hat 7-based system, just run this one command:
sudo yum upgrade
- Sometimes, you might just want to see if there are any security-related updates that are ready to be installed. Do that by running the following command:
sudo yum updateinfo list updates security
- If any security updates are available, you'll see them at the end of the command output. On the system that I just tested, there was only one security update available, which looks like this:
FEDORA-EPEL-2019-d661b588d2 ...