If you are getting error when trying to install Postman CLI in windows using the command mentioned at the page Install the Postman CLI | Postman Docs or does not have Admin rights to run Power shell.
There is a little hack you can use for the cli installation if you have node.js install in your machine. You can run following command on your terminal : npm install -g postman-cli
It will do the same job as it is done by the Power Shell script to install the postman-cli without any admin right or 403 Forbidden error