Ubuntu 12.04 + android adb

1st Step:
Download SDK Tools only from http://developer.android.com/sdk/index.html.
My download link is http://dl.google.com/android/android-sdk_r22.0.5-linux.tgz

2nd Step:
untar the SDK tool in your folder and execute the android from $yourPath/android-sdk-linux/tools/
if you didn't have install the jdk, please install by the prompt. sudo apt-get install openjdk-7-jdk.

3rd Step:
install the Android SDK Tools, Android SDK Build-tools by the Android SDK Manager as the "
android" execution.

4th Step:
./adb from the $yourPath/android-sdk-linux/platform-tools
Maybe it will be occurred "No such file or directory when you execute. Please install by this prompt -> sudo apt-get install lib32ncurses5 lib32stdc++6