appify. Create the simplest possible mac app from a shell script

appify

#!/usr/bin/env bash
# 
# url         : https://gist.github.com/672684
# version     : 2.0.2
# name        : appify
# description : Create the simplest possible mac app from a shell script.
# usage       : cat my-script.sh | appify MyApp
# platform    : Mac OS X
# author      : Thomas Aylott <[email protected]>

APPNAME=${1:-Untitled}

if [[ -a "$APPNAME.app" ]]; then
  echo "App already exists :'(" >&2
  echo "$PWD/$APPNAME.app"
  exit 1
fi

mkdir -p "$APPNAME.app/Contents/MacOS"
touch    "$APPNAME.app/Contents/MacOS/$APPNAME"
chmod +x "$APPNAME.app/Contents/MacOS/$APPNAME"

DONE=false
until $DONE ;do
  read || DONE=true
  echo "$REPLY" >> "$APPNAME.app/Contents/MacOS/$APPNAME"
done

echo "$PWD/$APPNAME.app"