Jack Wallen

Find out why you should consider using a password manager to protect your data and improve password management.

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 you’ve never deployed a website with the Apache web server, you’re about to learn how.

Sudo via SSH lets you run admin commands on a remote server with elevated privileges. Learn the commands with this concise guide.

If network troubleshooting leads you to believe there’s an issue with IPv6, you may need to shut down that protocol on your Linux machines.

If you never set, forgot, or change your MySQL password, you’re in luck. This article walks you through these steps, so you’ll never be at a loss for that database root user password.

Here’s how to use the secure copy command, in conjunction with ssh key authentication, for an even more secure means of copying files to your remote Linux servers.

Discover the benefits of social CRM and how it enhances customer relationships. Learn how crm software can improve social media strategy.

Are you having trouble remembering what IP addresses are in use on your network? Jack Wallen shows you how to discover those addresses with two simple commands.

Do you use Linux machines in your data center? If so, it’s probably a good idea to regularly check the health of the SSD drives used on those machines. Here’s how to do it.