The touch command
Create empty files, or update a file’s time. Creates each file that doesn’t exist yet, empty. For a file that exists, it only updates the modification time; the contents stay as they are.
A practice shell in your browser that behaves like bash on Linux for these commands. Nothing you type leaves the page.
Usage
touch FILE...
Examples
touch todo.txtAn empty filetouch a.txt b.txt c.txtThree at once