Linux Commands

How to Fix apt and dnf Lock Errors After a Crashed Upgrade

When a package upgrade stops halfway through, your package manager can stay locked and leave many packages only partly installed.

pwd looks like one of the simplest Linux commands, but there are a few details worth knowing once symlinks and

Most admins learn usermod -aG in their first week and never read much beyond it. But drop the -a once

Most sysadmins reach for chmod when they want to lock down a file. The problem is that chmod 000 only

Most people treat dnf as a drop-in replacement for yum and stop there. But that misses a lot of what

Most people run dmesg once, see thousands of lines, and close the terminal. But that’s not really how you should

Most sysadmins only use cat to dump a file and tail -f to watch logs. That leaves a lot of

Linux command line has a lot of fun around itself and many tedious task can be performed very easily yet

You’ve probably run df -h, waited a few seconds, and run it again while a file copy or backup was

Most Linux users come across the ! symbol in only two situations: when they learn the sudo !! shortcut, or

Linux provides tons of command line utilities that Linux administrators learned years ago are now outdated. They still work, the

For years, I never gave GNU coreutils much thought. They’re the standard Linux commands like ls, cp, mv, cat, sort,