Sudo lets you run any terminal command as another user — hence "substitute user" — but the default and most common use for it ...

Unix was developed as a command line interface in the early 1970s with a very rich command vocabulary. DOS followed more than a decade later for the IBM PC, and DOS commands migrated to Windows.

Commands that provide help are essential. Here's a look at some of the help you can get from the Linux system itself. Even after you’ve used Linux for a while, you will still find yourself needing ...

I've been using Linux for a very long time, and from day 1, the terminal window and command-line interface (CLI) have been an integral part of my work. At the same time, I've learned that it's OK to ...

GUIs are great—we wouldn’t want to live without them. But if you’re a Mac or Linux user and you want to get the most out of your operating system (and your keystrokes), you owe it to yourself to get ...

If you have a telescope or just like studying the skies, you'll appreciate the Kstars app from the KDE project. It's a ...

Working on the command line is an integral part of being a successful Linux user. You need to have a firm grasp of certain commands to work effectively. There are even certain commands that you must ...

Cron is nice and all, but don't forget about its cousin at. When I first started using Linux, it was like being tossed into the deep end of the UNIX pool. You were expected to use the command line ...

Last week’s column introduced NTP, the Network Time Protocol and the concept of highly accurate timekeeping. While numerous commands exist to help system administrators maintain fairly accurate time ...

When one of only a handful of Windows servers that I manage dropped off my radar for a while, I wasn’t sure what to think. I had been running an application, for which this system was the server and ...

Linux is constantly evolving, and with it the tools that its fans use on a daily basis. However, some of the classics such as iptables , which has been replaced by nftables , are now not only outdated ...