问题
When I use the Mac OS X Terminal to navigate to the folder with my Android Emulator and type emulator, I get:
command not found
Here's what happens:
$ emulator
-bash: emulator: command not found
How do I get it to work?
回答1:
The current directory is not normally included in your $PATH on a *nix operating system like OS X; to execute a program in the current directory, precede it with the path to the current directory (.):
$ ./emulator
回答2:
Emulator can be added with Android Studio https://developer.android.com/studio/run/managing-avds.html
To start emulator: ~/Library/Android/sdk/tools/emulator -avd Nexus_5X_API_23
Related question: How do I launch the Android emulator from the command line?
回答3:
Open Android Studio. Click on AVD Manager (the icon with the android and phone) [example image: AVD Manager]. See the list of emulators. You should see something like "Install Emulator" if you don't have any.
Once this is successful, you'll get the tools folder downloaded to your ~/Library/Android/sdk
That is the folder you want, because it has the android and emulator command line tools.
来源：https://stackoverflow.com/questions/10269274/i-get-command-not-found-when-i-try-to-run-android-emulator-on-mac-os-x