#!/bin/bash
if [ -z ${1+x} ]; then
    echo -e "\033[91mdidn't include a file exstension. (eg. \".cs\")"
    exit -1
fi

# get all the files with the file extension
git ls-files | grep -E ".*\\$1" |

# run git blame on each file, which shows the commit for each line
xargs -n 1 git blame --line-porcelain |

# aquire the authors of this output and sort it
grep "^author " | sort |

# count all the unique authors and sort by number
uniq -c | sort -nr