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.
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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
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After extracting Blender’s archive, its executable remains inside its own directory and can be launched by its full path. I find that distinction useful: the shell’s version check and the archive’s executable offer different launch routes. Compare the available sources with the Blender version you need. Choose the install method that fits your Linux distribution.
How to install Blender on Linux? Read More »
mv report.txt archive/ places report.txt inside the archive directory under its original name. I can’t resist the detail that a successful move removes the old source path rather than leaving a second copy. Follow the source operand to the destination operand to see where the file goes. Compare the paths to tell whether mv renames
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