Remove files from a repo that should be ignored but you dont neccesarily want to delete from filesystem.

git-deshitifer.sh

#!/bin/bash

# Regexes matching files and folders in the gitignore that should never be in a repo.
GITIGNORE_REGEXES=( ".+\.(diff|err|orig|log|rej|swo|swp|vi|sass-cache|sublime-project|sublime-workspace|komodoproject|esproj|espressostorage|rbc)" ".+\~" "\.\/\.(DS_Store|_.+|cache|project|settings|tmproj|komodotools|hg|svn|CVS|idea)" "\.\/(nbproject|Thumbs\.db|_notes|dwsync\.xml)" )

# Get rid of them in git, leave them in filesystem.
for REGEX in "${GITIGNORE_REGEXES[@]}"; do
	FILES=`find -E . -iregex "$REGEX" | sed 's/^..//;' | tr '\n' ' '`
	echo "## Regex: $REGEX"
	if [ ! "$FILES" = "" ]; then
		echo "## Files: $FILES"
		git rm -rf --cached --ignore-unmatch $FILES
	fi
done