'run' is not recognized as an internal or external command, operable program or batch file. code example

Example 1: 'source' is not recognized as an internal or external command, operable program or batch file.

env\Scripts\activate

Example 2: batch 'else' is not recognized as an internal or external command, operable program or batch file.

if exist "%userprofile%\.android\avd\%avdName%.avd" (
   msg %username% 'true'
) else (
   msg %username% 'false'
)