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Bash namerefs for dynamic variable referencing

https://rednafi.com/misc/bash-namerefs/ · 20 Sep 2024

Master Bash namerefs with declare -n to create dynamic variable references. Build generic functions for arrays and associative arrays without eval.

Shell redirection syntax soup

https://rednafi.com/misc/shell-redirection/ · 12 Sep 2024

Complete guide to Bash redirection. Master stdout, stderr, pipes, tee, file descriptors, and shorthand syntax with practical examples for every case.

shell unix

HTTP requests via /dev/tcp

https://rednafi.com/misc/http-requests-via-dev-tcp/ · 8 Aug 2024

Make raw HTTP requests with Bash's /dev/tcp file descriptor. Build health check scripts without curl or wget using TCP socket connections.

til shell unix networking

The *nix install command

https://rednafi.com/misc/install/ · 28 Jul 2024

Replace mkdir, cp, and chmod with a single install command. Copy files, create directories, and set permissions in one step with GNU coreutils.

shell unix til cli

Here-doc headache

https://rednafi.com/misc/heredoc-headache/ · 19 Jul 2024

Avoid here-doc pitfalls when running remote commands via SSH. Learn variable expansion gotchas and simpler alternatives for deployment scripts.

shell unix devops github

I kind of like rebasing

https://rednafi.com/misc/on-rebasing/ · 18 Jun 2024

Master git rebase for cleaner commit history. Learn interactive rebasing, squashing commits, and rebasing feature branches onto main with practical examples.

git shell unix github

Pesky little scripts

https://rednafi.com/misc/pesky-little-scripts/ · 29 Oct 2023

Organize custom scripts with comma-prefixed naming. Improve tab completion and eliminate clutter by prefixing script names with special characters.

shell unix cli

Dotfile stewardship for the indolent

https://rednafi.com/misc/dotfile-stewardship-for-the-indolent/ · 27 Sep 2023

Manage dotfiles across devices with GNU Stow. Symlink configuration files from git repo to home directory with simple, idempotent commands.

shell unix til cli

Using DNS record to share text data

https://rednafi.com/misc/dns-record-to-share-text/ · 17 Jul 2023

Share data via DNS TXT records using dig and base64 encoding. Learn limitations, security concerns, and practical use cases for DNS tunneling.

shell unix til networking

Unix-style pipelining with Python's subprocess module

https://rednafi.com/python/unix-style-pipeline-with-subprocess/ · 14 Jul 2023

Build Unix-style command pipelines in Python using subprocess.run with stdout piping for efficient process chaining and output capture.

python til shell unix