Delete All Forked Github Repositories (dry-run by default)

delete_forked_repos.sh

#!/bin/bash

USERNAME="GITHUB-USERNAME"

# Download github cli -> https://cli.github.com/

# You may need to run:
# chmod +x delete_forked_repos.sh
# gh auth login
# gh auth refresh -h github.com -s delete_repo

# Parse command-line options
dry_run=true
while [[ "$#" -gt 0 ]]; do
	case $1 in
	--delete)
		dry_run=false
		;;
	*)
		echo "Unknown option: $1" >&2
		exit 1
		;;
	esac
	shift
done

result=$(gh repo list --fork | awk '{print $1}' | grep -e "^$USERNAME")
if [[ -z $result ]]; then
	echo "No forked repositories found for @$USERNAME"
else
	echo "DRY RUN: Would delete the following repositories: "
	echo "$result" | while read full_name; do
		if [ $dry_run == true ]; then
			echo "$full_name"
		else
			echo "Deleting $full_name"
			gh repo delete $full_name --yes
		fi
	done
fi

if [ $dry_run == true ]; then
	echo "To actually delete use the --delete option."
fi