using cypress without npm code example

Example 1: install cypress

npm install cypress or npm install cypress --save-dev // Make sure that you have already run npm init

./node_modules/.bin/cypress open  //to open cypress window, will take 30 secs

Example 2: cypress run all files in folder

I think you're looking for --spec path/to/folder/*.js

You can run all the tests in a folder, or even in all subfolders of a folder

example:  --spec cypresss/integration/subsetA/**/*.js
would run all .js files in all folders under the "subsetA" folder in cypress/integration.