Adds cheatsheet for adb.

* Android Debug Bridge, a CLI for interacting with a connected droid
  device or emulator.

adb.md

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+---
+title: adb
+category: CLI
+layout: 2017/sheet
+weight: -1
+updated: 2018-2-6
+---
+
+### Device Basics
+
+| Command                           | Description                                 |
+| ---                               | ---                                         |
+| `adb devices`                     | Lists connected devices                     |
+| `adb devices -l`                  | Lists connected devices and kind            |
+| ---                               | ---                                         |
+| `adb root`                        | Restarts adbd with root permissions         |
+| `adb start-server`                | Starts the adb server                       |
+| `adb kill-server`                 | Kills the adb server                        |
+| `adb remount`                     | Remounts file system with read/write access |
+| `adb reboot`                      | Reboots the device                          |
+| `adb reboot bootloader`           | Reboots the device into fastboot            |
+| `adb disable-verity`              | Reboots the device into fastboot            |
+
+`wait-for-device` can be specified after `adb` to ensure that the command will run once the device is connected.
+
+`-s` can be used to send the commands to a specific device when multiple are connected.
+
+#### Examples
+```
+$ adb wait-for-device devices
+ List of devices attached
+ somedevice-1234 device
+ someotherdevice-1234 device
+$ adb -s somedevice-1234 root
+```
+
+### Logcat
+
+| Command                              | Description                            |
+| ---                                  | ---                                    |
+| `adb logcat`                         | Starts printing log messages to stdout |
+| `adb logcat -g`                      | Displays current log buffer sizes      |
+| `adb logcat -G <size>`               | Sets the buffer size (K or M)          |
+| `adb logcat -c`                      | Clears the log buffers                 |
+| `adb logcat *:V`                     | Enables ALL log messages (verbose)     |
+| `adb logcat -f <filename>`           | Dumps to specified file                |
+
+#### Examples
+```
+$ adb logcat -G 16M
+$ adb logcat *:V > output.log
+```
+
+### File Management
+
+| Command                              | Description                       |
+| ---                                  | ---                               |
+| `adb push <local> <remote>` | Copies the local to the device at remote   |
+| `adb pull <remote> <local>` | Copies the remote from the device to local |
+
+#### Examples
+```
+$ echo "This is a test" > test.txt
+$ adb push  test.txt /sdcard/test.txt
+$ adb pull /sdcard/test.txt pulledTest.txt
+```
+
+### Remote Shell
+
+| Command                                | Description                                                           |
+| ---                                    | ---                                                                   |
+| `adb shell <command>`                  | Runs the specified command on device (most unix commands work here)   |
+| `adb shell wm size`                    | Displays the current screen resolution                                |
+| `adb shell wm size WxH`                | Sets the resolution to WxH                                            |
+| `adb shell pm list packages`           | Lists all installed packages                                          |
+| `adb shell pm list packages -3`        | Lists all installed 3rd-party packages                                |
+| `adb shell monkey -p app.package.name` | Starts the specified package                                          |