Seeing what’s in a folder is one of the first things you’ll do in a Linux terminal. The ls command lists a folder’s contents, and its options can show hidden files or add details like size and modification time. Below are the ls options that change which entries appear and how they’re sorted. What is
How to Use ls Command in Linux/Unix Read More »
On Fedora and other systems that install software as RPM packages, a program you no longer need is removed through the same package manager that installed it. Running yum remove takes the package out, and yum shows you every package it plans to remove before anything changes. The steps below cover finding a package’s exact
How to uninstall packages using YUM command on Linux? Read More »
Fedora and Red Hat Enterprise Linux install and update software with a command-line tool called DNF. It fetches packages from configured repositories and works out which other packages each one needs. This reference shows you how to check which DNF version you have, then walks through package tasks from search to removal. What is DNF?
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Ask who created Linux and you’ll usually hear one name, Linus Torvalds. He started the Linux kernel in 1991 as a personal project while studying in Helsinki, and a much wider set of developers later built complete systems around it. I’ll trace what came before Linux, from Unix to MINIX, and how the first distributions
History of Linux – How did Linux Start and Who Created Linux? Read More »
You can edit photos or add text to an image on Linux with GIMP, a free and open-source image editor. GIMP saves your work in its own project file so you can keep editing later, and exports a regular image such as a PNG to share. I’ll walk you through installing GIMP from Flathub and
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Powering off or rebooting a Linux computer from the terminal is the job of the shutdown command. It can act right away or at a time you set, and it can warn logged-in users before it starts. You can choose between power off and reboot with -P and -r, then schedule the action for later.
How To Use The shutdown Command in Linux? Read More »
Hiding or renaming a private file on Linux doesn’t keep other people out of it, so you need to encrypt it. GPG encrypts a file with a passphrase you choose and writes the result as a separate encrypted copy. The steps cover encrypting and decrypting a file this way, then doing the same for a
How to encrypt and decrypt a file or Directory on Linux? Read More »
A private-key passphrase prompt is for unlocking your local key, not for supplying the remote account password. I’m hooked by the contrast: SSH may use a key already available to your client without asking for a password. Consider what your computer asks the destination to do when you start a login. The ssh client and
How to Connect to a Remote Host Using the SSH Command in Linux? Read More »
Why give a machine’s name its own 127.0.1.1 entry, as the Debian Reference example does? I’m drawn to the separation: the hostname entry lets the machine name resolve without replacing localhost. Trace a system name lookup through the sources selected in /etc/nsswitch.conf. You’ll also see how /etc/hosts maps names locally without changing the hostname stored
What is the Hosts File in Debian? Read More »
dd’s conv=ucase example turns dd-lowercase.txt into LINUX DD TEST followed by a newline. What appeals to me is that dd changes the text during the copy. Look at the two ends of dd’s copy. Identify the source with if= and the destination with of=. What dd copies GNU dd copies bytes from an input stream
How to use the dd command in Linux? Read More »