Signs snap plugin

sign-plugin.sh

#!/bin/bash

die() {
	echo >&2 "$@"
	exit 1
}

if [ "$#" -lt 3 ] || [ "$#" -gt 3 ]
then
	die "Error: expected the secret-keyring public-keyring and plugin to sign"
fi

priv_ring=$1
pub_ring=$2
plugin=$3
red=`tput setaf 1`
green=`tput setaf 2`
reset=`tput sgr0`

echo "${green}signing the plugin ${plugin} ${reset}"
echo "${red}gpg --no-default-keyring --armor --secret-keyring $priv_ring --keyring $pub_ring --output $plugin.asc --detach-sig $plugin ${reset}"
echo ""
echo "[Enter] to continue"
read x
gpg --no-default-keyring --armor --secret-keyring $priv_ring --keyring $pub_ring --output $plugin.asc --detach-sig $plugin 
echo ""

echo "${green}verify the image${reset}"
echo "${red}gpg --no-default-keyring --secret-keyring $priv_ring --keyring $pub_ring --verify $plugin.asc $plugin ${reset}"
echo ""
echo "[Enter] to continue"
read x
gpg --no-default-keyring --secret-keyring $priv_ring --keyring $pub_ring --verify $plugin.asc $plugin