Small bash script for generating keystore file and generate signed apk for ionic apps

SignedApkGenrator.sh

#!/bin/bash
echo "-----------Release apk builder for Ionic-------------"
echo "---------------By rio257-------------------"

read -p "Do you want to generate keystore file? <Y/N> " prompt
read -p "Enter the name of app? " appname

if [[ $prompt == "y" || $prompt == "Y" || $prompt == "yes" || $prompt == "Yes" ]]
then

keytool -genkey -v -keystore $appname.jks -keyalg RSA -keysize 2048 -validity 10000 -alias $appname
echo "Keystore file generated"
  else

echo "Signing android-release-unsigned.apk with keystore $appname.jks + with alias $appname"

jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore $appname.jks android-release-unsigned.apk $appname
echo " zipaligning apk.. "
$ANDROID_HOME/build-tools/27.0.2/zipalign -v 4 android-release-unsigned.apk $appname.apk
echo "verifying apk.."
$ANDROID_HOME/build-tools/27.0.2/apksigner verify $appname.apk

echo "Signed apk generated in $pwd"
  exit 0
fi