💻 WebUSB Terminal Shell
Full-featured interactive Unix terminal running directly on Android OS (UID 2000). Execute package manager (pm), window manager (wm), activity manager (am), and system settings commands.
App Management
Android 1.0+
Risk: SAFE
Start Activity / Launch App
Launches an Activity, opens an application, or triggers a custom Intent with extras.
Command Syntax
adb shell am start
Generic Syntax:
am start [-D] [-W] [-P <FILE>] [--start-profiler <FILE>] [-S] [-N] [-R <COUNT>] [-a <ACTION>] [-d <DATA_URI>] [-t <MIME_TYPE>] [-c <CATEGORY>] [-e|--es <EXTRA_KEY> <EXTRA_STRING_VALUE>] [-n <COMPONENT>]
Options & Parameters
| Flag | Description |
|---|---|
| -n <COMPONENT> | Explicit component name formatted as package/activity class. |
| -a <ACTION> | Intent action name (e.g. android.intent.action.VIEW). |
| -d <DATA_URI> | Intent data URI (e.g. https://example.com or tel:123). |
| -t <MIME> | Intent MIME type (e.g. image/png, video/mp4). |
| -c <CATEGORY> | Intent category (e.g. android.intent.category.LAUNCHER). |
| -e <KEY> <VAL> | Pass string extra to the intent. |
| --ez <KEY> <VAL> | Pass boolean extra (true/false). |
| --ei <KEY> <VAL> | Pass integer extra. |
| -W | Wait for launch to complete and print benchmark timings. |
| -S | Force stop the target app before starting the activity. |
| -D | Enable debugging (wait for debugger attachment). |
Real-World Usage Examples
Launch an app by package and main activity
Starts the specified activity.
adb shell am start -n com.example.app/.MainActivityOutput:
Starting: Intent { cmp=com.example.app/.MainActivity }Open website URL in default Android browser
Launches browser with URL.
adb shell am start -a android.intent.action.VIEW -d https://webadbshell.devOutput:
Starting: Intent { act=android.intent.action.VIEW dat=https://webadbshell.dev }Measure cold start launch time (-W)
Measures TotalTime, WaitTime, and LaunchState.
adb shell am start -W -n com.spotify.music/com.spotify.music.MainActivityOutput:
Starting: Intent { cmp=com.spotify.music/.MainActivity }
Status: ok
LaunchState: COLD
Activity: com.spotify.music/.MainActivity
TotalTime: 382
WaitTime: 405
CompleteForce-stop before starting (-S)
Kills the application process first then cold-launches the activity.
adb shell am start -S -n com.example.app/.MainActivityOutput:
Stopping: com.example.app
Starting: Intent { cmp=com.example.app/.MainActivity }