Jack Wallen shows you how to clean the caches for both the DNF and APT package managers, so you can solve package installation problems that arise from corrupt installation metadata.

One minute you have an indispensable high-tech tool... and the next minute, you have a doorstop. Avoid the cost and inconvenience of a damaged smartphone by following a few best practices.

These steps walk you through the process of setting up an SFTP server on Linux for the secure transfer of files for specialized file transfer-only users.

If your Linux shell scripts are getting tripped up by SSH fingerprints, follow this concise tutorial for an easy solution.

If you're not sure how to view your SSH certificates, this article walks you through the steps on Linux, macOS, and Windows.

If you're looking to clear out old spam and blocked SMS messages from Android, Jack Wallen is here to show you how.