Replace string with string in bash

How to replace a string within a string in pure bash.

How can I split up a Git commit buried in history?

Ever wanted to split up a Git commit buried deep in the history?

(Neo)Vim - Spell Check

How to use the incredible good spell-checker of (Neo)Vim.

ttygif - Error: WINDOWID environment variable was empty

How to fix this annoyance that ttygif spits out lately.

Bash - Check if command is available / installed

How to check if a command is available in bash.