Whatever hacky script you are writing already exists in GNU Core Utilities

| linux | devops |

When I think of bash, I think of writing hacky scripts that do random things utilizing “bash commands”. It turns out that the parts of bash that “do stuff” such as echo, cut, cat are part of a larger program called GNU Core Utilities.

The GNU Core Utilities are the basic file, shell and text manipulation utilities of the GNU operating system.These are the core utilities which are expected to exist on every operating system.
Source: Coreutils - GNU core utilities I am working on a general purpose backup utility and this evening I was moments away from writing something like this: perl -e (print split("/\//", "/foo/bar/baz.tar.gz")

My goal was to try to extract the base file name from a given directory (I recognize that that code does not actually do that). Then I realized that this was pure madness and there had to be a better way. This is when I discovered the handy basename program. It simply does the needful. GNU Core Utilities is full of all sorts of gems such as this one. My main takeaway from this is to read the entire GNU Core Utilities manual so I can stop writing horrible things.

Thank you for reading! Share your thoughts with me on bluesky, mastodon, or via email.

Check out some more stuff to read down below.

Most popular posts this month

Recent Favorite Blog Posts

This is a collection of the last 8 posts that I bookmarked.

Articles from blogs I follow around the net

6,000 curl stickers

I am heading to FOSDEM again at the end of January. I go there every year and I have learned that there is a really sticker-happy audience there. The last few times I have been there, I have given away several thousands of curl stickers. As I realized I d…

via daniel.haxx.se January 6, 2026

Pluralistic: Code is a liability (not an asset) (06 Jan 2026)

Today's links Code is a liability (not an asset): AI psychosis, tech boss edition. Hey look at this: Delights to delectate. Object permanence: Coldplay CD DRM; Star Wars Wars; Digital manorialism vs neofeudalism; Transvaginal foetal sonic bombardment:…

via Pluralistic: Daily links from Cory Doctorow January 6, 2026

KVM migration from intel to AMD fails with missing cmp_legacy feature (+ solution)

Context I'm running a virtualisation lab environment, with four Intel-based CPUs (i5-6500) and one AMD Ryzen 3 PRO 2200GE. When migrating virtual machines from one of the Intel hosts to the AMD host, the migration would fail with the following error: er…

via Louwrentius January 6, 2026

Generated by openring