Adb shell commands to change settings or perform tasks on a phone

Question

How do I use adb to perform some automated tasks on my android phone? I need to find commands that I can issue from the command line (ideally, using a .bat file) that will

Answer 1

Although question is old, it might help someone else.

For video playback, you can try this:

adb shell am start -a android.intent.action.VIEW -d   "file:///mnt/sdcard/DCIM/Camera/test.3gp" -t "video/*" 

^gives you a prompt of all capable players that can play this file.

adb shell am start -a android.intent.action.VIEW -d "file:///mnt/sdcard/DCIM/Camera/test.3gp" -t "video/*" -n "com.alensw.PicFolder/.PlayerActivity" 

^plays in player specified by switch -n.