pure sh bible
A collection of pure POSIX sh alternatives to external processes
...It’s especially useful for people who have to write init scripts, Docker entrypoints, embedded or minimal-system scripts where Bash is not guaranteed. By centralizing idioms, the repo becomes a reference you can copy from instead of digging through StackOverflow every time. It also encourages good shell habits: quoting, avoiding useless forks, and staying POSIX.