Android debug bridge command line-adb shell tips -logcat/am/pm/dumpsys

### logcat filter 
logcat DisplaySettings:V   DisplaySettings:V   SystemUIApplication:V  SystemBars:V  PhoneStatusBar:V  *:E

logcat DisplaySettings:V   DisplaySettings:V   SystemUIApplication:V  SystemBars:V  PhoneStatusBar:V  *:E |grep -v  audio

###  Broadcast 
hide/display systembar
am broadcast -i "com.android.action.display_systembar"

am broadcast -i "com.android.action.hide_systembar"

### start activity 

## logcat 
05-24 03:40:29.834  1102  2304 I ActivityManager: START u0 {act=intent.activate.main flg=0x14000000 cmp=com.x2omedia.adsp/.MainActivity} from uid 10062 on display 0
130|root@sabresd_6dq:/sdcard/X2O # pm list  packages   |grep x2                
package:com.x2omedia.adsp
root@sabresd_6dq:/sdcard/X2O #   a
130|root@sabresd_6dq:/sdcard/X2O # am start -n com.x2omedia.adsp/.MainActivity 
Starting: Intent { cmp=com.x2omedia.adsp/.MainActivity }
root@sabresd_6dq:/sdcard/X2O # ps  |grep x2o
u0_a56    2424  232   1137408 73704 futex_wait b6c895f4 S com.x2omedia.adsp

root@sabresd_6dq:/sdcard/X2O # 

######### pm 

gtelwifiue:/ $ pm list package
pm list package
package:com.samsung.android.provider.filterprovider
package:com.monotype.android.font.rosemary
package:com.samsung.oh
package:com.sec.android.app.DataCreate
package:com.skype.raider
...........

1|gtelwifiue:/ $ pm list package   -f
pm list package   -f
package:/system/app/FilterProvider/FilterProvider.apk=com.samsung.android.provider.filterprovider
package:/system/app/RoseEUKor/RoseEUKor.apk=com.monotype.android.font.rosemary
package:/system/app/SAMSUNG_PLUS/SAMSUNG_PLUS.apk=com.samsung.oh
package:/system/priv-app/AutomationTest_FB/AutomationTest_FB.apk=com.sec.android.app.DataCreate
package:/system/app/MSSkype_stub/MSSkype_stub.apk=com.skype.raider
package:/system/priv-app/CtsShimPrivPrebuilt/CtsShimPrivPrebuilt.apk=com.android.cts.priv.ctsshim

gtelwifiue:/ $ dumpsys   package       com.google.android.webview    |grep version
package       com.google.android.webview    |grep version                     <
    versionCode=311211600 minSdk=21 targetSdk=26
    versionName=60.0.3112.116
gtelwifiue:/ $

## logcat 
05-24 03:40:29.834  1102  2304 I ActivityManager: START u0 {act=intent.activate.main flg=0x14000000 cmp=com.x2omedia.adsp/.MainActivity} from uid 10062 on display 0

130|root@sabresd_6dq:/sdcard/X2O # pm list  packages   |grep x2                
package:com.x2omedia.adsp
root@sabresd_6dq:/sdcard/X2O #   a
130|root@sabresd_6dq:/sdcard/X2O # am start -n com.x2omedia.adsp/.MainActivity 
Starting: Intent { cmp=com.x2omedia.adsp/.MainActivity }
root@sabresd_6dq:/sdcard/X2O # ps  |grep x2o
u0_a56    2424  232   1137408 73704 futex_wait b6c895f4 S com.x2omedia.adsp
root@sabresd_6dq:/sdcard/X2O #