After using Linux for a while, it’s difficult to transition back to windows. One big reason is the absence of command line shortcuts for all programs.
While Linux (Ubuntu in my case) adds a path to all new applications installed from the terminal via sudo apt-get install, Windows doesn’t do it for every program.
You have two options-
1. Add the path of that program manually to the PATH variable of your Environment Variables settings.
Goto Computer->Properties->Advanced System Settings->Advanced->Environment Variables->Path for your Username. You can edit that to add the directory where your program is installed.
2. You can create a shortcut for that program and copy that in any existing folder with a path in the Windows Environment Variables (for e.g. System32).
I found the second one to be easier, since copy+paste is much easier for me.