[Windows] Refreshing Environment variable for windows command prompt or Powershell

Sometimes, after installing a package like chocolatey,or npm packages, it asks you to restart the cmd.exe or powershell window to reload the new registered path, for the new commands/settings to work. 

Well most of the case, it is not a big issue, but sometimes I just hate having to do away with my command history. So whats an easy workaround to do, run refreshenv. 

In cmd.exe (Command Shell) run : 

C:\Windows\system32> refreshenv
Refreshing environment variables from registry for cmd.exe. Please wait... Finished..

In Powershell:

PS C:\Users\parag> refreshenv

Refreshing environment variables from registry for cmd.exe. Please wait...Finished..

PS C:\Users\parag>

Enjoy working in the same window without having to part with your command history.