With 25rc1 of the SDK tools I am having a problem when starting the emulators from $PATH
➜ ~ which emulator
/home/ligi/bin/android-sdk/tools/emulator
➜ ~ emu
In Ubuntu 19.10!
With the environment variables already configured ($ANDROID_HOME), you should be able to list the AVDs, but if you are unable to start the AVD, do the following:
# Check the AVD target name
emulator -list-avds
# But to start do:
$ANDROID_HOME/emulator/emulator @avd_name
or
/home/$USER/Android/Sdk/emulator/emulator @avd_name