====== adb backup/restore/run-as ======

===== adb backup =====
  - adb shell
  - adb backup -f ~/data.ab -noapk app.package.name
  - dd if=data.ab bs=1 skip=24 | python -c "import zlib,sys;sys.stdout.write(zlib.decompress(sys.stdin.read()))" | tar -xvf -

===== adb run-as =====
  - run-as com.package.name

===== adb restore =====
  - adb restore client.ab


===== Example =====
<code bash>
adb backup -apk   -f pushups.ab me.pjq.pushups
adb backup -apk   -f client.ab me.pjq.ftclient
adb backup -apk   -f pm25.ab me.pjq.chinapm25

adb restore client.ab
adb restore pushups.ab
adb restore pm25.ab
</code>