Admod in qt 5.3

my trouble is: I’m using Ubuntu 14.4, when I open terminal and open this forder ( I use “cd /home/huyquang/Downloads/android-sdk-linux/extras/google/google_play_services/libproject/google-play-services_lib” command to open forder as this topic. I can’t run follow commands: android update lib-project —path . ant clean ant release because terminal show error: android: command not found huyquang@HuyPC:~/Downloads/android-sdk-linux/extras/google/google_play_services/libproject/google-play-services_lib$ ant clean Buildfile: /home/huyquang/Downloads/android-sdk-linux/extras/google/google_play_services/libproject/google-play-services_lib/build.xml [taskdef] Could not load definitions from resource anttasks.properties. It could not be found. [taskdef] Could not load definitions from resource emma_ant.properties. It could not be found. -check-env: BUILD FAILED /home/huyquang/Downloads/android-sdk-linux/extras/google/google_play_services/libproject/google-play-services_lib/build.xml:396: Problem: failed to create task or type checkenv Cause: The name is undefined. Action: Check the spelling. Action: Check that any custom tasks/types have been declared. Action: Check that any <presetdef>/<macrodef> declarations have taken place. Total time: 0 seconds and huyquang@HuyPC:~/Downloads/android-sdk-linux/extras/google/google_play_services/libproject/google-play-services_lib$ ant release Buildfile: /home/huyquang/Downloads/android-sdk-linux/extras/google/google_play_services/libproject/google-play-services_lib/build.xml [taskdef] Could not load definitions from resource anttasks.properties. It could not be found. [taskdef] Could not load definitions from resource emma_ant.properties. It could not be found. -set-mode-check: -set-release-mode: BUILD FAILED /home/huyquang/Downloads/android-sdk-linux/extras/google/google_play_services/libproject/google-play-services_lib/build.xml:1113: Problem: failed to create task or type xpath Cause: The name is undefined. Action: Check the spelling. Action: Check that any custom tasks/types have been declared. Action: Check that any <presetdef>/<macrodef> declarations have taken place. Total time: 0 seconds