git pre-commit hook to restrict and validate author email

git_valid_email.sh

#!/usr/bin/bash

# This pre-commit hook will prevent any commit by unvalid author email
# or restricted email/s regex

restrict_regex=$i
email="$(git config user.email)"


if [[ "$email" =~ "^[A-Za-z0-9._%+-]+<b>@</b>[A-Za-z0-9.-]+<b>\.</b>[A-Za-z]{2,4}$" ]]
then
    if [ -z "$restrict_regex" ] || [[ "$email" =~ "restrict_regex" ]]
    then
      exit 0
    else
      puts "current user email not matched restrioction regex so you are previnted from commiting any code"
      exit 1
    fi
else
    puts
    puts " Who Are You ?"
    puts " invalid git author email address"
    puts
    puts " try setting your name and email by : "
    puts "  `git config user.name YOUR_NAME`         " 
    puts "  `git config user.email YOUR_EMAIL`       "
    exit 1
fi