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

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

# if you're getting this error :
# 'pyinstaller' is not recognized as an internal or external command, operable program or batch file.
# then just write this in CMD:
pip install pyinstaller

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

npm install -g json-server

npx json-server --watch db.json
//if installed locally in your project - use npx to run