Commandline utility to request confirmation before running a command.

confirm

#!/bin/sh
# Function to verify user want to run the commant.
#
# Add this file to your PATH to make available and ensure that it has
# executable privileges.
#
# Example usage:
#    confirm && <command>
# http://stackoverflow.com/questions/3231804/in-bash-how-to-add-are-you-sure-y-n-to-any-command-or-alias

# call with a prompt string or use a default
read -r -p "${1:-Are you sure? [y/N]} " response
case $response in
    [yY][eE][sS]|[yY]) 
        true
        ;;
    *)
        false
        ;;
esac