How to Find the PID of a Linux Process With pidof or pgrep
Working with a Linux process often means knowing its process ID, or PID. It’s a unique number given to each piece of running software. Here are two ways to find out what it is.
How to Flush DNS in Linux
Is your internet browsing experience slow on your Linux device, or are the websites you’re visiting outdated or the wrong website altogether? Let’s discuss flushing the DNS cache on Linux, and how to know whether you really n…
7 Mistakes New Linux Users Make (and How to Avoid Them)
Learning Linux can be a frustrating experience where everything little thing feels like a battle. Avoiding these common mistakes will make your introduction and adoption of Linux much easier and less stressful….
How to Get Your Public IP in a Linux Bash Script
You’ll need your external IP address if you want to remotely connect to your computer. Finding it manually is easy, but here’s how to find your it from within a Linux script.
How to List Environment Variables on Linux
On Linux, environment variables hold important values and settings. Scripts, applications, and shells read these values, often to configure themselves, or to control their behavior. Here are several ways to show environment v…
How to Add a User to the sudoers File in Linux
If a sudo command on Linux gets you a message that a user “is not in the sudoers file,” you’ll need to get on the “sudoers” list. We’ll walk through adding a user to sudoers in Ubuntu and other Linux distributions as well as …
10 Useful Examples of the Linux rsync Command
The Linux rsync command is a powerful file copying and folder synchronization tool. Here are ten common use-cases that you’ll be able to put to good use on your own systems.
How to List Linux Services With systemctl
Your Linux computer relies on a lot of background tasks called services or daemons. On systemd-based distributions you have built-in commands that let you see which services are running, disabled, or failed….
How to Set a Static IP Address in Ubuntu
Your home network relies on IP addresses to route data between devices, and sometimes on reconnecting to the network a device’s address can change. Here’s how to give an Ubuntu Linux computer a permanent IP address that survi…
How to Integrate Applications and Scripts to a Linux Desktop
On Linux, an application without a desktop file won’t integrate with your desktop environment. Most applications provide one, but occasionally you’ll need to create one. It’s quite easy, just follow these steps….
How to Kill a Linux Process by Port Number
To kill a Linux process you need its ID or its name. If all you know is the port it’s using, can you still kill it? Yes, in several different ways.
What’s New in Ubuntu 22.10 ‘Kinetic Kudu’, Available Now
Canonical debuted the official build of Kinetic Kudu, the latest release of its Ubuntu Linux distribution, on October 20, 2022. We check it out to see what’s new and whether it’s worth upgrading.
How to Set Up Bluetooth on Linux
Sometimes your Linux distribution doesn’t detect your laptop’s Bluetooth hardware. Or perhaps you want to add a USB Bluetooth dongle to a desktop computer. Either way, here’s how to get Bluetooth working….
What’s New in Fedora 37, Available Now
After multiple delays, Fedora 37 was officially released on November 15, 2022. Here’s a preview of what to expect from the latest release of this uber-stable Linux distribution.
How (and Why) to Disable Root Login Over SSH on Linux
Logging in as the Linux root user is bad practice. Logging in as root over an SSH connection is even worse. We tell you why, and show you how to prevent it.
What’s the Difference Between .bashrc and .profile on Linux?
Linux machine running Bash read certain files when you log in to configure your shell environment. But which files are read, and when, can be confusing, which makes it difficult to know whether to edit the .bashrc file, the ….
How to Fix the Linux Boots Into the BIOS Error
GRUB updates have been known to result in Linux computers booting into the BIOS or UEFI settings. The fix for this takes advantage of a useful system recovery trick you really ought to know about.
How to Use AppImages on Linux
AppImages let Linux developers wrap their applications into a single file that installs on any Linux distribution. That simplifies things tremendously. Here’s how to use them, and integrate them into your desktop….
How to Make and Combine PDF Files on the Linux Command Line
PDF files were designed to promote sharing. Everyone can open them—in their web browser if they have nothing else. Linux lets you manipulate, merge, and split PDF files on the command line.
How to Tell If a Bash String Contains a Substring on Linux
Sometimes in Linux scripts, you want to know if a string of text contains a specific, smaller string. There are many ways to do this. We show you some simple, reliable techniques.
How to Parse CSV Data in Bash
Comma Separated Values (CSV) files are one of the most common formats for exported data. On Linux, we can read CSV files using Bash commands. But it can get very complicated, very quickly. We’ll lend a hand….
How to Run a Local Script on a Remote Linux Server
Scripting repetitive tasks improves the efficiency of system administration. That’s great for local machines, but what if you oversee remote servers? Can you run a local script on a remote computer? Yes!…
How to Trap Errors in Bash Scripts on Linux
By default, a Bash script on Linux will report an error but keep running. We show you how to handle errors yourself so that you can decide what needs to happen next.
How to Calculate Subnet Masks on Linux With ipcalc
Subnetting a large network improves security, increases performance, and organizes your network in a logical way. But some of the calculations are tough. The Linux ipcalc command makes the planning stage easy….
How to List All Users In a Group on Linux
On Linux, files have three sets of permissions. One set is for the file’s group. Before you allocate a file to a group, you may want to check who the group members are.
