A collection of pure POSIX sh alternatives to external processes.
The goal of this book is to document commonly-known and lesser-known methods of doing various tasks using only built-in POSIX `sh` features. Using the snippets from this bible can help remove unneeded dependencies from scripts and in most cases make them faster. I came across these tips and discovered a few while developing [KISS Linux](https://getkiss.org) and other smaller projects.