How to List Users in Linux
Linux is a multiuser operating system, so creating numerous user accounts is easy. Over time, it’s easy to lose track of which accounts are required. Listing user accounts helps you manage them.
Is an Expensive SD Card Better for a Raspberry Pi?
The Raspberry Pi is a cheap and cheerful computer packing a hefty punch. But will a cheap and cheerful SD card provide stable storage, or must you spend more? Here’s the lowdown.
How to Set the Default Gateway in Linux
Access to the internet—or any other network—is governed by the default gateway. We explain what a default gateway is, and how to set and change it on your Linux computer.
How to Zip and Unzip Files With Gzip on Linux
There are many file compression utilities, but the one you’re guaranteed to find on every Linux distribution is gzip. If you only learn to use one compression tool, it should be gzip .
How to Use the sar Command on Linux
The sar command lets you see performance statistics for different elements of your Linux computer, for both real-time and historical data. We show you how to use this great resource.
How to Use the pmap Command on Linux
Finding out how much RAM a Linux process uses isn’t a simple matter—especially when shared memory needs to be considered. Thankfully, the pmap command helps you make sense of it all.
How to Use the chattr Command on Linux
Along with the usual read, write, and execute file permissions, Linux files have another set of attributes that control other characteristics of the file. Here’s how to see them and change them.
How to Read Data From a Socket in Bash on Linux
The Linux command line lets you retrieve data by either listening on a socket or connecting to a socket. The data can be captured in a text file. We show you how.
apt vs. apt-get: What’s the Difference on Linux?
Why do Debian-based Linux distributions have apt as well as apt-get? Did apt replace apt-get or do they have different purposes? We explain the relationship between these two commands.
What’s New in Ubuntu 22.04 LTS ‘Jammy Jellyfish’
Ubuntu 22.04 LTS “Jammy Jellyfish” was released on April 21, 2022. This latest release of the ever-popular Ubuntu Linux distribution will have long-term support until 2027. Is the Jammy Jellyfish worth the upgrade? Let’s fin…
How to Validate the Syntax of a Linux Bash Script Before Running It
Bugs and typos in Linux Bash scripts can do dire things when the script is run. Here are some ways to check the syntax of your scripts before you even run them.
How To Use set and pipefail in Bash Scripts on Linux
The Linux set and pipefail commands dictate what happens when a failure occurs in a Bash script. There’s more to think about than should it stop or should it carry on.
How to Use the timedatectl Command on Linux
The Linux timedatectl command lets you set your time, date, and timezone for your system clock and your real-time clock. Spare a moment, and we’ll show you how it all works.
How to Use the Bash printf Command on Linux
The Bash printf command lets you write to a Linux terminal window with finer control and more formatting options than the echo command provides. Even printf ‘s odd quirks can be useful.
What’s New in GNOME 42, Available Now
GNOME 42 was released on March 23, 2022. Fedora 36 and Ubuntu 22.04 will include this release of the popular Linux desktop environment. We spin it up and see what’s new.
How to Convert Linux Installation Packages to Other Formats
The alien program converts installation packages from one Linux distribution for use on another one. But don’t Snap and Flatpak make that redundant now? Sort of, but it’s not quite that simple.
How to Use getopts to Parse Linux Shell Script Options
Do you wish your Linux shell scripts would handle command-line options and arguments more gracefully? The Bash getopts builtin lets you parse command-line options with finesse—and it’s easy too. We show you how….
BadUSB: The Cyber Threat That Gets You To Plug It In
A recent spate of USB-based cyberattacks has hit organizations in the US. Malicious USB devices are posted to selected victims. As soon as they are plugged in, the damage is done.
What Is the Interplanetary File System (IPFS) and How Do You Use It?
The Interplanetary File System (IPFS) is a distributed, peer-to-peer file-sharing network that is well-positioned to become the underpinning of a new, decentralized web. Here’s how it works, and how you can start using it….
How to Play Your Music Collection From the Linux Command Line
Need a way to play your collection of MP3, OGG, and FLAC music files right from the Linux command line? Here’s how to do it with a competent, lightweight terminal-based player.
How to Use the Linux cut Command
The Linux cut command lets you extract portions of text from files or data streams. It’s especially useful for working with delimited data, such as CSV files. Here’s what you need to know.
How to Use the findmnt Command on Linux
Discover everything about your file system mount points with the Linux findmnt command. It’s an all-in-one tool with a very easy syntax. We show you how to use it.
Easily Understand Your Linux RAM Usage With Smem
Linux memory usage can be difficult to interpret and hard to understand. With smem it’s easy to find out what memory a process is using, and which processes are using the most.
How to Use the find Command in Linux
The Linux find command is great at searching for files and directories. But you can also pass the results of the search to other programs for further processing. We show you how.
How to Detect and Defeat Cryptominers in Your Network
Mining for cryptocurrency isn’t illegal. But using a computer or network to do so without permission is. Here’s how to tell if someone is cryptojacking your resources for their own benefit.
