# deno > A secure runtime for JavaScript and TypeScript. > More information: . - Run a JavaScript or TypeScript file: `deno {{path/to/file.ts}}` - Start a REPL (interactive shell): `deno` - Run a file with network access enabled: `deno --allow-net {{path/to/file.ts}}` - Run a file from a URL: `deno {{https://deno.land/std/examples/welcome.ts}}` - Install an executable script from a URL: `deno install --allow-net --allow-read {{file_server}} {{https://deno.land/std/http/file_server.ts}}`