Create prune-gh-branches.sh

created a script to prune branches of a certain age (based on most recent edit)

Author: alex-yung-github

scripts/prune-gh-branches.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+
+# Script: prune-gh-branches.sh
+# Requirements: Linux terminal (like WSL), gh and jq installed. 
+#   Also, please use ```gh auth login``` to login to github beforehand
+# Description: Deletes branches older than specified number of months (based on most recent edit)
+# Usage: Run the script with the number of months as an argument.
+# Example: ./prune-gh-branches.sh 18
+
+# Check if the number of months is provided
+if [ -z "$1" ]; then
+  echo "Usage: $0 <number_of_months>"
+  echo "Example: ./prune-gh-branches.sh 18 (to delete branches older than 18 months)"
+  exit 1
+fi
+
+# Set the repository name
+REPO="thecourseforum/theCourseForum2"
+
+# Get the number of months from the user input
+MONTHS=$1
+
+# Get the current date in ISO format
+CURRENT_DATE=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+
+# Calculate the date X months ago
+X_MONTHS_AGO=$(date -u -d "$MONTHS months ago" +"%Y-%m-%dT%H:%M:%SZ")
+
+# Fetch all branches
+BRANCHES=$(gh api repos/$REPO/branches --paginate | jq -r '.[].name')
+
+# Check if there are any branches
+if [ -z "$BRANCHES" ]; then
+  echo "No branches found in the repository."
+  exit 0
+fi
+
+# Initialize an empty array to store old branches
+OLD_BRANCHES=()
+
+# Loop through each branch and fetch the last commit date
+echo "Checking branches for last commit date..."
+for BRANCH in $BRANCHES; do
+  # Fetch the last commit date for the branch
+  LAST_COMMIT_DATE=$(gh api repos/$REPO/branches/$BRANCH | jq -r '.commit.commit.committer.date')
+
+  # Check if the last commit date is older than X months
+  if [[ "$LAST_COMMIT_DATE" < "$X_MONTHS_AGO" ]]; then
+    OLD_BRANCHES+=("$BRANCH $LAST_COMMIT_DATE")
+  fi
+done
+
+# Check if there are any old branches
+if [ ${#OLD_BRANCHES[@]} -eq 0 ]; then
+  echo "No branches older than $MONTHS months found."
+  exit 0
+fi
+
+# Print the list of old branches with their last commit date
+echo "The following branches were last edited at least $MONTHS months ago:"
+echo "Branch Name | Last Commit Date"
+echo "-----------------------------"
+for BRANCH_INFO in "${OLD_BRANCHES[@]}"; do
+  echo "$BRANCH_INFO"
+done
+echo ""
+
+# Ask for confirmation
+read -p "Do you want to delete these branches? (y/n): " CONFIRM
+if [[ $CONFIRM != "y" && $CONFIRM != "Y" ]]; then
+  echo "Aborting. No branches were deleted."
+  exit 0
+fi
+
+# Delete the branches
+for BRANCH_INFO in "${OLD_BRANCHES[@]}"; do
+  BRANCH_NAME=$(echo "$BRANCH_INFO" | awk '{print $1}')
+  echo "Deleting branch: $BRANCH_NAME"
+  gh api -X DELETE repos/$REPO/git/refs/heads/$BRANCH_NAME
+done
+
+echo "Done! All specified branches have been deleted."