Practical Linux Command Line 2.0 - Update Existing Packages (update, upgrade)

The video tutorial explains the importance of keeping software packages updated, especially for security reasons. It provides a step-by-step guide on using the 'apt' command to update and upgrade packages on Linux systems. The tutorial also covers cleaning up unnecessary packages with 'autoremove' and suggests rebooting the system to ensure updates are applied correctly. Additionally, it provides equivalent commands for other operating systems like Fedora and Brew, emphasizing the need to check for updates regularly.

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