Bash script to show the top-committers in a repo, in descending frequency of commits

top-committers

#!/usr/bin/env bash
# top-committers [NUMBER]

count=${1:-200}

git log --pretty=format:"%ae %at" |
awk 'BEGIN { FS=" "; OFS="," }
     !seen[$1]++ { first[$1]=$2 }
     { last[$1]=$2; count[$1]++ }
     END {
       for (email in first) print email, first[email], last[email], count[email]
     }' |
while IFS=, read -r email first last count; do
  printf "%s | %s | %s | %s\n" "$email" "$(date -u -r $first '+%Y-%m-%d')" "$(date -u -r $last '+%Y-%m-%d')" "$count";
done 2>/dev/null |
sort -bnr -k 7 |
head -$count |
column -t