title: Error: spawn EACCES when trying to build Ionic app in Ubuntu 15.10
body: <p>I was was working with an cordova/ionic project for past couple of weeks. I used windows for development. But recently I had to change my developing environment to Ubuntu. I use Ubuntu 15.10. Tried to build the same project  in Ubuntu after setting up Android SDK , JDK ANT ect., gave me this error. I can "ionic serve" or "cordova serve" without any problem. Tried removing and re adding the platform android but the issue was same. Below is the error.</p>
  
  <pre><code>user@myhost:~/works/myproject$ ionic build android
  Running command: /home/user/works/myproject/hooks/after_prepare/010_add_platform_class.js /home/user/works/myproject
  add to body class: platform-android
  Running command: /home/user/works/myproject/hooks/after_prepare/020_remove_sass_from_platforms.js /home/user/works/myproject
  Running command: /home/user/works/myproject/platforms/android/cordova/build 
  ANDROID_HOME=/home/user/android
  JAVA_HOME=/usr/lib/jvm/java-8-oracle
  Running: /home/user/works/myproject/platforms/android/gradlew cdvBuildDebug -b /home/user/works/myproject/platforms/android/build.gradle -Dorg.gradle.daemon=true
  error caught: Error: spawn EACCES
  /home/user/works/myproject/platforms/android/cordova/node_modules/q/q.js:126
                      throw e;
                      ^
  
  Error: spawn EACCES
      at exports._errnoException (util.js:874:11)
      at ChildProcess.spawn (internal/child_process.js:298:11)
      at Object.exports.spawn (child_process.js:339:9)
      at module.exports (/home/user/works/myproject/platforms/android/cordova/lib/spawn.js:37:35)
      at /home/user/works/myproject/platforms/android/cordova/lib/build.js:370:24
      at _fulfilled (/home/user/works/myproject/platforms/android/cordova/node_modules/q/q.js:798:54)
      at self.promiseDispatch.done (/home/user/works/myproject/platforms/android/cordova/node_modules/q/q.js:827:30)
      at Promise.promise.promiseDispatch (/home/user/works/myproject/platforms/android/cordova/node_modules/q/q.js:760:13)
      at /home/user/works/myproject/platforms/android/cordova/node_modules/q/q.js:821:14
      at flush (/home/user/works/myproject/platforms/android/cordova/node_modules/q/q.js:108:17)
  ERROR building one of the platforms: Error: /home/user/works/myproject/platforms/android/cordova/build: Command failed with exit code 1
  You may not have the required environment or OS to build this project
  Error: /home/user/works/myproject/platforms/android/cordova/build: Command failed with exit code 1
  </code></pre>
  
  <p>Checked for permission/ownership issues but didn't find any. I can compile a java file therefore not a problem with my jdk. Here is my ionic info</p>
  
  <pre><code>Cordova CLI: 5.4.0
  Ionic CLI Version: 1.7.8
  Ionic App Lib Version: 0.6.4
  OS: Distributor ID: Ubuntu Description: Ubuntu 15.10 
  Node Version: v4.2.2
  </code></pre>