Use Cygwin utilities from Powershell terminal

I widely use Unix/Posix like commands in my daily activities. I have only Windows environments. For that reason I use utility called MobaXterm which is built on top of Cygwin and allow me to use utilities like awk, sed, Grep and etc. I noticed that Power shell on my PC works significantly faster than MobaXterm hence I want to use it from inside the powershell. E.g. instead of using poweshell ‘Select-String’ I want to use Cygwin’grep’ How should I do it? Could I change the path to MobaXterm bin directory to make powershell aware of it? Or something similar? Note: I do not have admin privilege on my PC Appreciate your help