I got annoyed at having to know how many lines I want to `head` or `tail`, and having to write the same stuff over and over again using `cat -n` / `grep` (or even worse an awk script) to figure them out on the fly, so ... two new scripts, `ignore-after` and `ignore-up-to` which are basically content-based versions of `head` and `tail`.
You're welcome.
https://github.com/DrHyde/shellscripts/commit/73b79e211ebaacbb9bc4f296fd1db6d2174b6f9e

