Why is a newline at the end of a text file important to many Unix/Linux tools?
Why do tools like Vim and Git warn me about missing newlines?
What kind of effect can it have on a shell script or other tools which process such a file?

I got ChatGPT to explain IFS ... it did a pretty good job!

1970, The UNIX Epoch and the British Three Year Summer - Why the UNIX Epoch (midnight on 1st January 1970) is actually 1am in UK Time

An alternative answer to a tired interview question

Using the --help style of arguments instead of just -h

The relatively obscure 'join' command

Redirecting Standard Output (stdout) and Standard Error (stderr)

Writing Ordinal Numbers (1st, 2nd, 3rd, etc)

CRLF (DOS) and LF (*nix) text file formats.
With a footnote about '/bin/bash^M: bad interpreter'

Why is Oct 31 == Dec 25?

Psst! This article isn't really about ls!

What happens when you change a running shell script?

From the 1983 Usenix conference

A standardised banner function for better presentation

An interview with Brian Kernighan, one of the co-creators of Unix, on the story behind the GREP search tool

or HashPling, or whatever you want to call it.

Excuse me Sir, just checking your Linux licenses...

Thou Shalt Not Kill -9

Parsing short command-line arguments (-v, -f filename, etc)

When non-technical people see me running nmap (or strace, or lsof, or anything else...)

Changing the case of text in variables

Newline in Echo: When to use -n, when to use \c

Creating a simple Spinner to show a script is still running

Generating temporary (and possibly unique, and/or identifiable) filenames

Doing a different thing to the same thing (or, Teletubbies mode, if you prefer!)

In which we use a completely unsuitable programming language for fun and learning purposes

Wit and Humour in *nix Documentation

A 'sleep' substitute which gives regular updates

Controlling and Quitting Loops in Shell Scripts

The problem with using shell functions to return integers

The Waka Waka Poem - onomatopoeic poetry!

An apparently contradictory position - how do you make a shell script abort on errors, but be able to check for errors like "grep foo /etc/hosts" and act accordingly?

Editing variable values in-place

Including advanced sorts, and coping with spaces

Copy a command into a text editor for further editing

A rant!

Two methods to use the ping command to quickly scan a network

Using Bash's pattern matchin to implement the well-known strstr() function.

What could possibly go wrong?!

Editing Contents of Variables

This function uses Bash's simple built-in integer mathematical capabilities to display a duration (in seconds) in a more human-readable form

Brian Kernighan, one of the co-creators of Unix, on the Unix Pipeline

Explained with Cars

An Adult Colouring Book

A Confession

There Just Is.

Using GNU Date to work out how many days until a given event (such as Christmas, 25th December)

A Real Programmer

Not Needed.

The old "What I Do / What I Think I Do" meme.

Creating a simple Progress Bar for a shell script.

Using shell builtin commands to deal with a fork-bombed machine.

Understanding the 'sort' utility

A vital step on the journey towards shell scripting proficiency.

A useful way of expanding lists automatically. Useful for Bart Simpson, useful for you.

A useful way of automatically expanding lists of numbers and characters. With Bash, you don't need to type "for x in 1 2 3 4 5", or do lots of other laborious typing. It can expand all sorts of numbers, and letters, for you, in ways that you probably never knew.

Normally you only get the exit status of the last command in a pipeline - this way, you can get the status of any command in a pipline of any length

That you wouldn't ordinarily think of

And how to deal with awkward version numbers

The smart way to deal with errors