Reading the command line with getopt
You can make your program much more flexible if it can respond to the user every time the program runs.
Getting started with the Linux cat command
Cat is a fairly simple tool designed to concatenate and write file(s) to your screen, which is known as standard output (stdout). You can expect...
Manage multiple service instances with systemctl
Services, services, services. A service is a huge part of computing. You're reading this article on a service. Your computer is running services. The internet...
I need a list of URLs
I used the command line to do in seconds what would have needed more than ten minutes to do by hand.
Straight quotes from pandoc
Change pandoc’s curly quotes into straight quotes with this script.
Viewing PDF documents in console mode
I have a Raspberry Pi 3 that’s sat unused for the last few years. I used to run the Raspberry Pi as a personal “home...
Extracting text with awk
The awk script interpreter is a very handy tool for systems administrators, and anyone else who uses Linux at the command line. With awk, you...
Redirectors — More than you think
If you use the command line at all, you're probably familiar with the basic concept of redirection using Standard IO (STDIO). One common usage is...
Update Linux from the command line
Be a power user by updating your system from the command line.
Selective updates using ‘dnf’
Here’s how I update my system except for one problem library
How I automate file edits with ‘sed’
Here’s a neat command line trick to make changes to a text file.
Using the dmesg command
As a SysAdmin I frequently need to access the kernel log to obtain information of various types. This can range from searching for why a...