With proper settings, Linux users can be forced to periodically change their passwords. Here's how to view password aging settings and how to configure some of the settings.
The watch and tail commands can help monitor activity on Linux systems. This post looks at some helpful ways to use these commands.
The find command has a huge array of options to help you locate exactly the files you're looking for on a Linux system. This post explores a series of extremely useful commands.
The dig command is extremely versatile both for retrieving information from domain name servers and for troubleshooting.
The man pages on a Linux system can do more than provide information on particular commands. They can help discover commands you didn't realize were available.
Here are some warm-up exercises for anyone just starting to use the Linux command line. Warning: It can be addictive.
Using a set of public/private keys to allow you to log into a remote Linux system or run commands using ssh without a password can be very convenient, but setup is just tad tricky. Here's how and a script to help.
There are times when locking a Linux user account is necessary and times when you need to reverse that action. Here are commands for managing account access and what's behind them.
The Linux seq command can generate lists of numbers and at lightning speed. It's easy to use and flexible, too.
