go get github.com/jralph/laravel-queue-worker

laravel-queue-worker --artisan="path/to/artisan" --processes=numberOfProcessesToRun

Usage: laravel-queue-worker [-a value] [-d value] [-m value] [-p value] [-q value] [-r value] [-s value] [-t value] [parameters ...]
 -a, --artisan=value    The path to artisan executable. [Default: "artisan"]
     --delay=value      Amount of time to delay failed jobs. [Default: 0]
     --memory=value     The memory limit in megabytes. [Default: 128]
 -p, --processes=value  The number of works to run. [Default: 5]
     --queue=value      The queue to listen on. [Default: "default"]
     --tries=value      The number of times to attempt a job. [Default: 0]
 -s, --sleep=value      Number of seconds to sleep when no jobs are available. [Default: 3]
     --timeout=value    The number of seconds a child process can run for. [Default: 60]
     --tries=value      The number of times to retry a failed job. [Default: 0]

// Spin up 20 laravel queue workers running in the current directory.
laravel-queue-worker --processes=20