Appium automation test foundation - ADB shell command

Android The system is based on Linux Kernel , in other words Android The bottom layer of the system is Linux System . therefore Linux Many of the commands in Android There are the same or similar implementations in the system , stay  adb shell  You can call . The previous part has been used  adb shell  command , Let's add that yes adb shell Command awareness .
Tips ： To be in Android On the phone adb shell command , You need to root mobile phone , Virtual machines are direct root Of Android System , So it can be used directly on the virtual machine adb shell command .

1、 Check the process

command ：

adb shell ps

Output example ：

USER     PID   PPID  VSIZE  RSS     WCHAN    PC        NAME
root      1     0     8904   788   ffffffff 00000000 S /init
root      2     0     0      0     ffffffff 00000000 S kthreadd
...
u0_a71    7779  5926  1538748 48896 ffffffff 00000000 S com.sohu.inputmethod.sogou:classic
u0_a58    7963  5926  1561916 59568 ffffffff 00000000 S org.mazhuang.boottimemeasure
...
shell     8750  217   10640  740   00000000 b6f28340 R ps

The meaning of each column ：

Name	meaning
USER	Users
PID	process ID
PPID	The parent process ID
NAME	Process name

2、 View real-time resource usage

command ：

adb shell top

Output example ：

User 0%, System 6%, IOW 0%, IRQ 0%
User 3 + Nice 0 + Sys 21 + Idle 280 + IOW 0 + IRQ 0 + SIRQ 3 = 307

  PID PR CPU% S  #THR     VSS     RSS PCY UID      Name
 8763  0   3% R     1  10640K   1064K  fg shell    top
  131  0   3% S     1      0K      0K  fg root     dhd_dpc
 6144  0   0% S   115 1682004K 115916K  fg system   system_server
  132  0   0% S     1      0K      0K  fg root     dhd_rxf
 1731  0   0% S     6  20288K    788K  fg root     /system/bin/mpdecision
  217  0   0% S     6  18008K    356K  fg shell    /sbin/adbd
 ...
 7779  2   0% S    19 1538748K  48896K  bg u0_a71   com.sohu.inputmethod.sogou:classic
 7963  0   0% S    18 1561916K  59568K  fg u0_a58   org.mazhuang.boottimemeasure
 ...

The meaning of each column ：

Name	meaning
PID	process ID
PR	priority
CPU%	The present moment takes up CPU percentage
S	Process status （R= function ,S= sleep ,T= track / stop it ,Z= Zombie process ）
#THR	Number of threads
VSS	Virtual Set Size Virtual memory consumption （ Contains the memory used by the shared library ）
RSS	Resident Set Size Actually using physical memory （ Contains the memory used by the shared library ）
PCY	Scheduling policy priority ,SP_BACKGROUND/SPFOREGROUND
UID	The user of the process owner ID
NAME	Process name

top  The command also supports some command line parameters , The detailed usage is as follows ：

Usage: top [ -m max_procs ] [ -n iterations ] [ -d delay ] [ -s sort_column ] [ -t ] [ -h ]
    -m num   Show at most how many processes 
    -n num   Refresh how many times and exit 
    -d num   Refresh interval （ Unit second , The default value is  5）
    -s col   Sort by a column （ You can use  col  value ：cpu, vss, rss, thr）
    -t       Show thread information 
    -h       Show help documents 

3、 Check the process UID

There are two options ：

1. adb shell dumpsys package <packagename> | grep userId=
   Such as ：

$ adb shell dumpsys package org.mazhuang.guanggoo | grep userId=
   userId=10394

2、 adopt ps Command to find the pid after  adb shell cat /proc/<pid>/status | grep Uid
Such as ：

$ adb shell
gemini:/ $ ps | grep org.mazhuang.guanggoo
u0_a394   28635 770   1795812 78736 SyS_epoll_ 0000000000 S org.mazhuang.guanggoo
gemini:/ $ cat /proc/28635/status | grep Uid
Uid:    10394   10394   10394   10394
gemini:/ $

4、 Other adb shell command

Here is a brief description of other common commands , The orders that have been specially mentioned above will not be explained additionally ：

command	function
cat	Display file contents
cd	Toggle directory
chmod	Change the access mode of files / Access right
df	View disk space usage
grep	Filter output
kill	Kill designated PID The process of
ls	List the contents of the catalog
mount	View and manage the mount Directory
mv	Move or rename files
ps	View running processes
rm	Delete file
top	Check the resource usage of the process

and Linux The commands in the system are basically the same .

a key ： Supporting learning materials and video teaching

So here I have carefully prepared the detailed information of the above outline in The link below is as follows