Tips on Unix utilities and related topics from @JohnDCook.
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Diagram of the bash brace expression
{w,t,}h{e{n{,ce{,forth}},re{,in,fore,with{,al}}},ither,at}
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If you stick two squares on the longer side of a silver rectangle, you get another silver rectangle.
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Evil Mode: Or, How I Learned to Stop Worrying and Love Emacs piped.video/JWD1Fpdd4Pc
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Have you ever wished your bash script could print out a snake, a flying saucer, or a nose? Of course you have. Who hasn't? Well, now you can. These symbols have been included in Unicode 17.0.
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DITAA is a programming language for creating diagrams.
The source code is an ASCII art version of the output.
johndcook.com/blog/2016/06/1…
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The comm utility lets you compute set differences and intersections
johndcook.com/blog/2019/11/2…
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Evil Mode: Or, How I Learned to Stop Worrying and Love Emacs piped.video/JWD1Fpdd4Pc
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Data files for drawing other animals are Perl files with a .cow extension.
$ cat /usr/share/cowsay/cows/elephant.cow
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The cowsay command has flags to let you draw animals other than cows.
$ cowsay -f elephant With four parameters I can fit an elephant, and with five I can make him wiggle his trunk. -- John von Neumann
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Programs with verbose start-up messages interrupt your workflow at the command line.
How to fix that: johndcook.com/blog/2019/09/0…
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