Selectively bulk remove git branches

gitDeleteMultiBranches.sh

#!/bin/bash

if [ ! -d ".git" ]; then
  echo "Not a git Directory"
  exit 1
fi


git branch -d `git for-each-ref --format="%(refname:short)" refs/heads/\* |
    while read -r line; do 
        read -p "remove branch: $line (y/N)?" answer </dev/tty;
        case "$answer" in y|Y) echo "$line";; 
        esac; 
    done`