Notes about Linux

• Get current screen resolution :

xdpyinfo | grep dimensions

• Get the ".apk" file from an android device :

pm list packages | grep "youtube"   #com.google.android.youtube.tv
pm path com.google.android.youtube.tv   #/system/app/XXX/YYY

• Show all folders and files under current folder WITHOUT recursion :

du -sh *
# 8.0K   XXX
# 4.0K   XXX
# 439M   XXX