this post was submitted on 15 Jan 2025
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Honestly, the fact that bash exposes low level networking primitives like a TCP socket via /dev/TCP is such a godsend. I've written an HTTP client in Bash before when I needed to get some data off of a box that had a fucked up filesystem and only had an emergency shell. I would have been totally fucked without /dev/tcp, so I'm glad things like it exist.
EDIT: oh, the article author is just using netcat, not doing it all in pure bash. That's a more practical choice, although it's way less fun and cursed.
EDIT: here's a webserver written entirely in bash. No netcat, just the /bin/bash binary https://github.com/dzove855/Bash-web-server