$PATH on OS X

Hello together,

i need to debug an py-script that makes use of unix binaries like "which, grep" and so on.

If i start the py-script from Terminal (bash), unix binaries are found and all works like expected.

If i start the script from PyCharm "Debug" or "Run", there seems to be no "PATH" set => the unix binaries were not found.

Am I missing sth.?

Thank you very much for help,

Börni