You can dump system data to the screen by the command
shell dumpsys. The output shows lots of information, so you might redirect STDOUT to a text file.
% adb shell dumpsys > dump.txt % less dump.txt Currently running services: SurfaceFlinger accessibility account activity ...
The first section tells about Currently running services. If a service name is specified after
dumpsys, then the other sections are filtered out.
# Show only "battery" % adb shell dumpsys battery Current Battery Service state: AC powered: true USB powered: false Wireless powered: false ...
Look up the
Activitiy Resolver Table section in the output of the command
shell dumpsys package.
% adb shell dumpsys package > package.txt % less package.txt ... Activity Resolver Table: Full MIME Types: application/itunes: 41adb878 com.android.music/.MediaPlaybackActivity filter 41adb9e0 ...