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#!/usr/bin/env bash
#
# Find and print all remote branches not committed to in over two months.
# Prints grouped by committer email. Used to detect stale branches that
# could potentially be removed.
TWO_MONTHS=$((60 * 60 * 24 * 60))
two_months_ago=$(($(date +%s) - TWO_MONTHS))
all_branches=$(git branch --remote | grep -v HEAD)
old_branches=()
# Filter out branches touched recently
for branch in $all_branches; do
branch_commit_timestamp=$(git show -s --format=%at "$branch")
if [[ $branch_commit_timestamp -lt $two_months_ago ]]; then
old_branches+=("$branch")
else
echo "Skipping too new branch $branch"
fi
done
echo ""
echo "=== Stale branches? ==="
echo ""
authors=$(for branch in "${old_branches[@]}"; do git show -s --format="%ae" "$branch"; done | sort -u)
for author in $authors; do
echo "# $author #"
for branch in "${old_branches[@]}"; do
if [[ $(git show -s --format="%ae" "$branch") == "$author" ]]; then
echo " $branch"
fi
done
echo ""
done
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