# k6 > A modern load testing tool, using Go and JavaScript. - Run load test locally: `k6 run {{script.js}}` - Run load test locally with a given number of virtual users and duration: `k6 run --vus {{10}} --duration {{30s}} {{script.js}}` - Run load test locally with a given environment variable: `k6 run -e {{HOSTNAME=example.com}} {{script.js}}` - Run load test locally using InfluxDB to store results: `k6 run --out influxdb={{http://localhost:8086/k6db}} {{script.js}}` - Login to cloud service using secret token: `k6 login cloud --token {{secret}}` - Run load test on cloud infrastructure: `k6 cloud {{script.js}}`