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Android adb

Android adb

作者: 沉默的菋道 | 来源:发表于2020-05-15 18:05 被阅读0次

    概念

    Android 调试桥 (Android Debug Bridge) 是一种功能多样的命令行工具,可让您与设备进行通信。adb 命令可用于执行各种设备操作(例如安装和调试应用),并提供对 Unix shell(可用来在设备上运行各种命令)的访问权限。它是一种客户端-服务器程序,包括以下三个组件:

    • 客户端:用于发送命令。客户端在开发计算机上运行。您可以通过发出 adb 命令来从命令行终端调用客户端。
    • 守护进程 (adbd):在设备上运行命令。守护进程在每个设备上作为后台进程运行。
    • 服务器:管理客户端和守护进程之间的通信。服务器在开发机器上作为后台进程运行。

    adb 包含在 Android SDK 平台工具软件包中。您可以使用 SDK 管理器下载此软件包,该管理器会将其安装在/android_sdk/platform-tools/ 下。

    Android 调试桥 (adb) 是一种功能多样的命令行工具,可让您与设备进行通信。adb 命令可用于执行各种设备操作(例如安装和调试应用),并提供对 Unix shell(可用来在设备上运行各种命令)的访问权限。它是一种客户端-服务器程序,包括以下三个组件:

    • 客户端:用于发送命令。客户端在开发计算机上运行。您可以通过发出 adb 命令来从命令行终端调用客户端。
    • 守护进程 (adbd):在设备上运行命令。守护进程在每个设备上作为后台进程运行。
    • 服务器:管理客户端和守护进程之间的通信。服务器在开发机器上作为后台进程运行。

    adb 包含在 Android SDK 平台工具软件包中。您可以使用 SDK 管理器下载此软件包,该管理器会将其安装在 android_sdk/platform-tools/ 下。

    adb 的工作原理

    当您启动某个 adb 客户端时,客户端会先检查是否有 adb 服务器进程正在运行。如果没有,它将启动服务器进程。服务器在启动后会与本地 TCP 端口 5037 绑定,并监听 adb 客户端发出的命令 - 所有 adb 客户端均通过端口 5037 与 adb 服务器通信。

    然后,服务器会与所有正在运行的设备建立连接。它通过扫描 5555 到 5585 之间(该范围供前 16 个模拟器使用)的奇数号端口查找模拟器。服务器一旦发现 adb 守护进程 (adbd),便会与相应的端口建立连接。请注意,每个模拟器都使用一对按顺序排列的端口 - 用于控制台连接的偶数号端口和用于 adb 连接的奇数号端口。例如:

    模拟器 1,控制台:5554
    模拟器 1,adb:5555
    模拟器 2,控制台:5556
    模拟器 2,adb:5557
    依此类推
    

    如上所示,在端口 5555 处与 adb 连接的模拟器与控制台监听端口为 5554 的模拟器是同一个。

    服务器与所有设备均建立连接后,您便可以使用 adb 命令访问这些设备。由于服务器管理与设备的连接,并处理来自多个 adb 客户端的命令,因此您可以从任意客户端(或从某个脚本)控制任意设备。

    在设备上启用 adb 调试

    要在通过 USB 连接的设备上使用 adb,您必须在设备的系统设置中启用 USB 调试(位于开发者选项下)。
    在搭载 Android 4.2 及更高版本的设备上,“开发者选项”屏幕默认情况下处于隐藏状态。如需将其显示出来,请依次转到设置 > 关于手机,然后点按版本号七次。返回上一屏幕,在底部可以找到开发者选项。
    在某些设备上,“开发者选项”屏幕所在的位置或命名方式可能有所不同。
    现在,您已经可以通过 USB 连接设备。您可以通过从 android_sdk/platform-tools/ 目录执行 adb devices 来验证设备是否已连接。如果已连接,您将看到设备名称以“设备”形式列出。

    通过 WLAN 连接到设备

    一般情况下,adb 通过 USB 与设备进行通信,但您也可以在通过 USB 完成一些初始设置后通过 WLAN 使用 adb,如下所述。不过,如果您开发的是 Wear OS 应用,则应参阅调试 Wear OS 应用指南,其中提供了有关如何通过 WLAN 和蓝牙使用 adb 的特别说明。

    1. 将 Android 设备和 adb 主机连接到这两者都可以访问的同一 WLAN 网络。请注意,并非所有接入点都适用;您可能需要使用防火墙已正确配置为支持 adb 的接入点。
    2. 如果您要连接到 Wear OS 设备,请关闭与该设备配对的手机上的蓝牙。
    3. 使用 USB 数据线将设备连接到主机。
    4. 设置目标设备以监听端口 5555 上的 TCP/IP 连接。
    adb tcpip 5555
    
    1. 拔掉连接目标设备的 USB 数据线。
    2. 找到 Android 设备的 IP 地址。例如,对于 Nexus 设备,您可以在设置 > 关于平板电脑(或关于手机)> 状态 > IP 地址下找到 IP 地址。或者,对于 Wear OS 设备,您可以在设置 > WLAN 设置 > 高级 > IP 地址下找到 IP 地址。
    3. 通过 IP 地址连接到设备。
    adb connect device_ip_address
    
    1. 确认主机已连接到目标设备:
    $ adb devices
    --------------
    List of devices attached
    device_ip_address 5555 device
    

    现在,您可以开始操作了!

    如果 adb 连接断开:

    1. 确保主机仍与 Android 设备连接到同一个 WLAN 网络。
    2. 通过再次执行 adb connect 步骤重新连接。
    3. 如果上述操作未解决问题,重置 adb 主机:
    adb kill-server
    

    然后,从头开始操作。

    一.基本命令

    1.启动adb服务

    adb start-server
    

    2.停止adb服务

    adb kill-server
    

    3.查看adb版本

    adb version
    -----------
    Android Debug Bridge version 1.0.41
    Version 29.0.5-5949299
    Installed as /Users/xxx/Library/Android/sdk/platform-tools/adb
    

    4.以root权限重启adb

    adb root
    

    5.查看连接设备

    adb devices
    -----------
    List of devices attached
    ZL5228NGMC  device
    
    adb devices -l
    --------------------
    List of devices attached
    ZL5228NGMF             device usb:338821120X product:deen model:motorola_one device:deen_sprout transport_id:3
    

    6.重启设备

    adb reboot
    

    7.重启到bootloader,即刷机模式

    adb reboot bootloader
    

    8.重启到recovery,即恢复模式

    adb reboot recovery
    

    9.获取mac地址(废弃)

    adb shell cat /sys/class/net/wlan0/address
    

    10.获取CPU序列号

    adb shell cat /proc/cpuinfo
    ---------------------------
    processor   : 0
    BogoMIPS    : 38.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32
    CPU implementer : 0x41
    CPU architecture: 8
    CPU variant : 0x0
    CPU part    : 0xd03
    CPU revision    : 4
    
    processor   : 1
    BogoMIPS    : 38.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32
    CPU implementer : 0x41
    CPU architecture: 8
    CPU variant : 0x0
    CPU part    : 0xd03
    CPU revision    : 4
    
    processor   : 2
    BogoMIPS    : 38.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32
    CPU implementer : 0x41
    CPU architecture: 8
    CPU variant : 0x0
    CPU part    : 0xd03
    CPU revision    : 4
    
    processor   : 3
    BogoMIPS    : 38.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32
    CPU implementer : 0x41
    CPU architecture: 8
    CPU variant : 0x0
    CPU part    : 0xd03
    CPU revision    : 4
    
    processor   : 4
    BogoMIPS    : 38.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32
    CPU implementer : 0x41
    CPU architecture: 8
    CPU variant : 0x0
    CPU part    : 0xd03
    CPU revision    : 4
    
    processor   : 5
    BogoMIPS    : 38.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32
    CPU implementer : 0x41
    CPU architecture: 8
    CPU variant : 0x0
    CPU part    : 0xd03
    CPU revision    : 4
    
    processor   : 6
    BogoMIPS    : 38.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32
    CPU implementer : 0x41
    CPU architecture: 8
    CPU variant : 0x0
    CPU part    : 0xd03
    CPU revision    : 4
    
    processor   : 7
    BogoMIPS    : 38.00
    Features    : fp asimd evtstrm aes pmull sha1 sha2 crc32
    CPU implementer : 0x41
    CPU architecture: 8
    CPU variant : 0x0
    CPU part    : 0xd03
    CPU revision    : 4
    
    Hardware    : Qualcomm Technologies, Inc MSM8953
    Revision    : c100
    Serial      : ec16b17c00000000
    Device      : deen
    Radio       : APAC
    MSM Hardware    : MSM8953
    

    11.查看手机分辨率

    adb shell wm size
    -----------------
    Physical size: 720x1520
    
    adb shell "dumpsys window|grep mUnrestrictedScreen"
    ---------------------------------------------------
    mUnrestrictedScreen=(0,0) 720x1520
    

    12.获取手机物理密度

    adb shell wm density
    --------------------
    Physical density: 320
    

    13.查看手机系统android版本

    adb shell getprop ro.build.version.release
    ------------------------------------------
    8.1.0
    adb shell getprop|grep version
    ------------------------------
    [gsm.version.baseband]: [M8953_09.03.02.03R DEEN_APACDSDS_CUST]
    [gsm.version.baseband1]: [M8953_09.03.02.03R DEEN_APACDSDS_CUST]
    [gsm.version.ril-impl]: [Qualcomm RIL 1.0]
    [persist.radio.mcfg_version]: [null,null]
    [ril.baseband.config.version]: [DEEN_APACDSDS_CUST]
    [ro.build.version.all_codenames]: [REL]
    [ro.build.version.base_os]: [motorola/deen/deen_sprout:8.1.0/OPK28.63-18/141f:user/release-keys]
    [ro.build.version.ci]: [3]
    [ro.build.version.codename]: [REL]
    [ro.build.version.full]: [Blur_Version.28.201.3.deen.retail.en.US]
    [ro.build.version.incremental]: [1bd2]
    [ro.build.version.preview_sdk]: [0]
    [ro.build.version.qcom]: [LA.UM.6.6.r1-09000-89xx.0]
    [ro.build.version.release]: [8.1.0]
    [ro.build.version.sdk]: [27]
    [ro.build.version.security_patch]: [2018-10-01]
    [ro.com.google.gmsversion]: [8.1_201806]
    [ro.hw.boardversion]: [PVT]
    [ro.mot.build.version.release]: [28.201]
    [ro.mot.build.version.sdk_int]: [28]
    [ro.property_service.version]: [2]
    

    14.获取手机系统API版本

    adb shell getprop ro.build.version.sdk
    --------------------------------------
    27
    

    15.查看手机型号

    adb shell getprop ro.product.model
    ------------------------------
    motorola one
    
    adb shell getprop|grep product
    ------------------------------
    [ro.boot.hab.product]: [deen]
    [ro.build.product]: [deen_sprout]
    [ro.mot.build.oem.product]: [deen]
    [ro.mot.build.product.increment]: [201]
    [ro.product.board]: [msm8953]
    [ro.product.brand]: [motorola]
    [ro.product.cpu.abi]: [arm64-v8a]
    [ro.product.cpu.abilist]: [arm64-v8a,armeabi-v7a,armeabi]
    [ro.product.cpu.abilist32]: [armeabi-v7a,armeabi]
    [ro.product.cpu.abilist64]: [arm64-v8a]
    [ro.product.device]: [deen_sprout]
    [ro.product.display]: [motorola one]
    [ro.product.first_api_level]: [27]
    [ro.product.locale]: [en-US]
    [ro.product.manufacturer]: [motorola]
    [ro.product.model]: [motorola one]
    [ro.product.name]: [deen]
    [ro.vendor.product.brand]: [motorola]
    [ro.vendor.product.device]: [deen_sprout]
    [ro.vendor.product.manufacturer]: [motorola]
    [ro.vendor.product.model]: [motorola one]
    [ro.vendor.product.name]: [deen_retail]
    

    16.获取手机支持的CPU架构

    adb shell getprop ro.product.cpu.abilist
    ----------------------------------------
    arm64-v8a,armeabi-v7a,armeabi
    
    adb shell getprop ro.product.cpu.abilist32
    ------------------------------------------
    armeabi-v7a,armeabi
    
    adb shell getprop ro.product.cpu.abilist64
    ------------------------------------------
    arm64-v8a
    

    17.获取手机厂商名称

    adb shell getprop ro.product.brand
    --------------------------------------
    motorola
    

    18.获取序列号

    adb get-serialno
    ----------------
    ZL5228NGMC
    

    19.获取设备id(android id)

    adb shell settings get secure android_id
    ----------------------------------------
    945c35f45e0e2ab1
    

    20.获取手机存储信息

    adb shell df
    ------------
    Filesystem            1K-blocks     Used Available Use% Mounted on
    /dev/root               2499580  1957736    525460  79% /
    tmpfs                   1816724      904   1815820   1% /dev
    /dev/block/dm-1          499888   417452     72116  86% /vendor
    tmpfs                   1816724        0   1816724   0% /mnt
    /dev/block/mmcblk0p20     96688    72884     21756  78% /firmware
    /dev/block/mmcblk0p24     12016     7044      4648  61% /dsp
    /dev/block/mmcblk0p31      7252     7244         0 100% /vendor/fsg
    /dev/block/dm-2          186348      280    182200   1% /oem
    /dev/block/mmcblk0p32     28144      608     26884   3% /persist
    /dev/block/dm-3        53811180 32947380  20509516  62% /data
    /data/media            53811180 32947380  20509516  62% /storage/emulated
    
    二.应用操作相关

    1.安装应用

    adb install a.apk
    adb -d install -r a.apk
    adb -d DEVICE_ID install -r a.apk
    

    注意:如果您在多个设备可用时发出命令但未指定目标设备,则 adb 会生成错误。
    2.卸载应用

    adb uninstall -k com.adb.test
    adb shell pm uninstall --user 0 com.adb.test
    

    3.获取应用信息

    adb shell dumpsys package com.adb.test
    

    4.查看应用安装路径

    adb shell pm path com.adb.test
    ------------------------------
    package:/data/app/com.adb.test-pzQ7XcpLM0vpKpfMvkosVg==/base.apk
    

    5.查看应用版本信息

    adb shell dumpsys package {your package name} | grep version
    ------------------------------------------------------------
    versionCode=28 minSdk=21 targetSdk=28
    versionName=0.7.0
    

    6.启动应用

    adb shell am start com.adb.test/.MainActivity
    

    7.关闭应用

    adb shell am force-stop com.adb.test
    

    8.删除应用所有数据

    adb shell pm clear com.adb.test
    

    9.查看所有应用包名

    adb shell pm list package
    

    10.查看单个应用最大内存

    adb shell getprop|grep heapgrowthlimit
    --------------------------------------
    [dalvik.vm.heapgrowthlimit]: [192m]
    

    11,查看某个应用内存占用

    adb shell dumpsys meminfo com.adb.test
    --------------------------------------
    Applications Memory Usage (in Kilobytes):
    Uptime: 294830498 Realtime: 321900291
    
    ** MEMINFO in pid 9906 [com.adb.test] **
                       Pss  Private  Private  SwapPss     Heap     Heap     Heap
                     Total    Dirty    Clean    Dirty     Size    Alloc     Free
                    ------   ------   ------   ------   ------   ------   ------
      Native Heap    43168    43152        0    15384   108544    79642    28901
      Dalvik Heap     3684     3524      112       23     6505     3253     3252
     Dalvik Other     3984     3984        0      104                           
            Stack     1756     1756        0      444                           
           Ashmem       12        0        0        0                           
          Gfx dev    18716    18716        0        0                           
        Other dev       46        0        8        0                           
         .so mmap    11309     4060     6280      250                           
        .apk mmap        1        0        0        0                           
        .ttf mmap       32        0        0        0                           
        .dex mmap     2727        0      728        4                           
        .oat mmap      355        0       76        0                           
        .art mmap     4320     3952       32      507                           
       Other mmap      155        8      144        0                           
       EGL mtrack    13320    13320        0        0                           
          Unknown     7276     7276        0     1683                           
            TOTAL   129260    99748     7380    18399   115049    82895    32153
     
     App Summary
                           Pss(KB)
                            ------
               Java Heap:     7508
             Native Heap:    43152
                    Code:    11144
                   Stack:     1756
                Graphics:    32036
           Private Other:    11532
                  System:    22132
     
                   TOTAL:   129260       TOTAL SWAP PSS:    18399
     
     Objects
                   Views:       74         ViewRootImpl:        2
             AppContexts:        2           Activities:        1
                  Assets:        2        AssetManagers:        3
           Local Binders:       28        Proxy Binders:       32
           Parcel memory:       15         Parcel count:       60
        Death Recipients:        1      OpenSSL Sockets:        2
                WebViews:        0
     
     SQL
             MEMORY_USED:        0
      PAGECACHE_OVERFLOW:       55          MALLOC_SIZE:        0
     
     DATABASES
          pgsz     dbsz   Lookaside(b)          cache  Dbname
             4       44             33        18/25/3  
    /data/user/0/com.adb.test/databases/pri_wxop_tencent_analysis.db
             4       44            109       47/74/20 
     /data/user/0/com.adb.test/databases/wxop_tencent_analysis.db
             4       28             45      
    1329/22/2  /data/data/com.adb.test/database/pushinfo.db
    
    
    三.文件操作相关

    1.拷贝文件/目录到设备

    adb push <local>...<remote>
    

    2.从设备拷贝文件/目录,-a参数保留了文件的时间戳和模式

    adb pull [-a] <remote>...<local>
    

    3.查看设备log,和studio和eclipse的logcat相同,可通过参数控制输出的日志

    adb logcat  -s 过滤指定参数log  -v time 保留日志时间  >> 追加写  > 覆盖写
    

    下面的命令含义为:打印出log信息中的时间并且包含关键字“Test” 的所有log以覆盖写的方式保存到test文件

    adb logcat -v time -s Test > test.txt
    

    4.列出目录下的文件和文件夹,可选参数-al可查看文件和文件夹的详细信息

    adb shell ls [-al]
    

    5.进入文件夹

    adb shell cd <folder>
    

    6.查看文件

    adb shell cat <filename>
    

    7.重命名文件

    adb shell rename path/oldfilename path/newfilename
    

    8.删除文件/文件夹

    adb shell rm path/filename  -r 可选参数用于删除文件夹及下面的所有文件 eg:adb shell rm -r <folder>
    

    9.移动文件

    adb shell mv path/filename newpath/filename
    

    10.拷贝文件

    adb shell cp file newpath/file1
    

    11.创建目录

    adb shell mkdir path/folder
    

    12.拷贝PC文件到sdcard

    adb shell push /Users/xxx/Desktop/test.txt /sdcard/0
    ----------------------------------------------------
    /Users/xxx/Desktop/test?...e pushed. 0.0 MB/s (669 bytes in 0.058s)
    

    13.拷贝sdcard中文件到PC

    adb pull /sdcard/0/test.txt /Users/xxx/Desktop/test/
    ------------------------------------------------
    /sdcard/0/test.txt: 1 file pulled. 0.2 MB/s (669 bytes in 0.003s)
    

    14、设置文件最高读写权限

    adb shell chmod 777 filename
    

    adb帮助

    adb help
    --------
    Android Debug Bridge version 1.0.41
    Version 29.0.5-5949299
    Installed as /Users/xxx/Library/Android/sdk/platform-tools/adb
    
    global options:
     -a         listen on all network interfaces, not just localhost
     -d         use USB device (error if multiple devices connected)
     -e         use TCP/IP device (error if multiple TCP/IP devices available)
     -s SERIAL  use device with given serial (overrides $ANDROID_SERIAL)
     -t ID      use device with given transport id
     -H         name of adb server host [default=localhost]
     -P         port of adb server [default=5037]
     -L SOCKET  listen on given socket for adb server [default=tcp:localhost:5037]
    
    general commands:
     devices [-l]             list connected devices (-l for long output)
     help                     show this help message
     version                  show version num
    
    networking:
     connect HOST[:PORT]      connect to a device via TCP/IP
     disconnect [[HOST]:PORT] disconnect from given TCP/IP device, or all
     forward --list           list all forward socket connections
     forward [--no-rebind] LOCAL REMOTE
         forward socket connection using:
           tcp:<port> (<local> may be "tcp:0" to pick any open port)
           localabstract:<unix domain socket name>
           localreserved:<unix domain socket name>
           localfilesystem:<unix domain socket name>
           dev:<character device name>
           jdwp:<process pid> (remote only)
     forward --remove LOCAL   remove specific forward socket connection
     forward --remove-all     remove all forward socket connections
     ppp TTY [PARAMETER...]   run PPP over USB
     reverse --list           list all reverse socket connections from device
     reverse [--no-rebind] REMOTE LOCAL
         reverse socket connection using:
           tcp:<port> (<remote> may be "tcp:0" to pick any open port)
           localabstract:<unix domain socket name>
           localreserved:<unix domain socket name>
           localfilesystem:<unix domain socket name>
     reverse --remove REMOTE  remove specific reverse socket connection
     reverse --remove-all     remove all reverse socket connections from device
    
    file transfer:
     push [--sync] LOCAL... REMOTE
         copy local files/directories to device
         --sync: only push files that are newer on the host than the device
     pull [-a] REMOTE... LOCAL
         copy files/dirs from device
         -a: preserve file timestamp and mode
     sync [all|data|odm|oem|product|system|system_ext|vendor]
         sync a local build from $ANDROID_PRODUCT_OUT to the device (default all)
         -l: list files that would be copied, but don't copy them
    
    shell:
     shell [-e ESCAPE] [-n] [-Tt] [-x] [COMMAND...]
         run remote shell command (interactive shell if no command given)
         -e: choose escape character, or "none"; default '~'
         -n: don't read from stdin
         -T: disable PTY allocation
         -t: force PTY allocation
         -x: disable remote exit codes and stdout/stderr separation
     emu COMMAND              run emulator console command
    
    app installation (see also `adb shell cmd package help`):
     install [-lrtsdg] [--instant] PACKAGE
         push a single package to the device and install it
     install-multiple [-lrtsdpg] [--instant] PACKAGE...
         push multiple APKs to the device for a single package and install them
     install-multi-package [-lrtsdpg] [--instant] PACKAGE...
         push one or more packages to the device and install them atomically
         -r: replace existing application
         -t: allow test packages
         -d: allow version code downgrade (debuggable packages only)
         -p: partial application install (install-multiple only)
         -g: grant all runtime permissions
         --abi ABI: override platform's default ABI
         --instant: cause the app to be installed as an ephemeral install app
         --no-streaming: always push APK to device and invoke Package Manager as separate steps
         --streaming: force streaming APK directly into Package Manager
         --fastdeploy: use fast deploy
         --no-fastdeploy: prevent use of fast deploy
         --force-agent: force update of deployment agent when using fast deploy
         --date-check-agent: update deployment agent when local version is newer and using fast deploy
         --version-check-agent: update deployment agent when local version has different version code and using fast deploy
         --local-agent: locate agent files from local source build (instead of SDK location)
         (See also `adb shell pm help` for more options.)
     uninstall [-k] PACKAGE
         remove this app package from the device
         '-k': keep the data and cache directories
    
    debugging:
     bugreport [PATH]
         write bugreport to given PATH [default=bugreport.zip];
         if PATH is a directory, the bug report is saved in that directory.
         devices that don't support zipped bug reports output to stdout.
     jdwp                     list pids of processes hosting a JDWP transport
     logcat                   show device log (logcat --help for more)
    
    security:
     disable-verity           disable dm-verity checking on userdebug builds
     enable-verity            re-enable dm-verity checking on userdebug builds
     keygen FILE
         generate adb public/private key; private key stored in FILE,
    
    scripting:
     wait-for[-TRANSPORT]-STATE
         wait for device to be in the given state
         STATE: device, recovery, rescue, sideload, bootloader, or disconnect
         TRANSPORT: usb, local, or any [default=any]
     get-state                print offline | bootloader | device
     get-serialno             print <serial-number>
     get-devpath              print <device-path>
     remount [-R]
          remount partitions read-write. if a reboot is required, -R will
          will automatically reboot the device.
     reboot [bootloader|recovery|sideload|sideload-auto-reboot]
         reboot the device; defaults to booting system image but
         supports bootloader and recovery too. sideload reboots
         into recovery and automatically starts sideload mode,
         sideload-auto-reboot is the same but reboots after sideloading.
     sideload OTAPACKAGE      sideload the given full OTA package
     root                     restart adbd with root permissions
     unroot                   restart adbd without root permissions
     usb                      restart adbd listening on USB
     tcpip PORT               restart adbd listening on TCP on PORT
    
    internal debugging:
     start-server             ensure that there is a server running
     kill-server              kill the server if it is running
     reconnect                kick connection from host side to force reconnect
     reconnect device         kick connection from device side to force reconnect
     reconnect offline        reset offline/unauthorized devices to force reconnect
    
    environment variables:
     $ADB_TRACE
         comma-separated list of debug info to log:
         all,adb,sockets,packets,rwx,usb,sync,sysdeps,transport,jdwp
     $ADB_VENDOR_KEYS         colon-separated list of keys (files or directories)
     $ANDROID_SERIAL          serial number to connect to (see -s)
     $ANDROID_LOG_TAGS        tags to be used by logcat (see logcat --help)
     $ADB_LOCAL_TRANSPORT_MAX_PORT max emulator scan port (default 5585, 16 emus)
    

    参考:https://developer.android.google.cn/studio/command-line/adb

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