spam

Ever wanted a simple way to repeat a particular command at a particular cadence? spam runs any command you'd like at a set rate.

This is mainly intended for scenarios where you'd like to generate synthetic traffic via curl, but can also work with any other program of your choosing.

Usage

spam [-r RATE_PER_SECOND] -- PROGRAM_ARGS

Examples

Send 10 req/s to www.google.com

spam -r 10 -- curl www.google.com

Send 1 req/s to localhost:8080

spam -- curl localhost:8080

Add a 10 "hello" lines to a particular file per second

spam -r 10 -- bash -c 'echo "hello" >> ./text.txt'

Installation

Mac OS

You can use brew tap to install:

brew tap Steven-Ireland/homebrew-tap
brew install spam

Linux

Head over to Releases and download the latest release binary. You'll need to place it on your PATH manually.

See Also

This program outputs durations in milliseconds for each run -- you can pipe the output to asciigraph for a nice visual moving representation:

spam -r 10 -- curl www.google.com | asciigraph -r -h 10 -w 40

Questions / Contributions

Feel free to open an issue or submit a PR if anything comes up. It's a pretty tiny program at the moment, so larger features may be left open to community contributions.