am:tldr:eac24

The command "am start -n ${com-android-settings--Settings}" is used to start an Android activity specified by its component name.

Here is a breakdown of the command:

• "am" is a command-line tool in Android that stands for "activity manager." It allows you to perform various actions related to Android activities.
• "start" is a sub-command of "am" used to start an activity.
• "-n" is an option used to specify the component name of the activity you want to start.
• "${com-android-settings--Settings}" is the component name of the activity you want to start. In this case, it is "com.android.settings/.Settings".

The "com.android.settings/.Settings" component name refers to the Settings activity in the Android Settings application. By running this command, you will launch the Settings activity on an Android device or emulator.