s1mple

#!/bin/bash

case "${1:-''}" in
    'start')
        if test -f /tmp/selenium.pid
        then
            echo "Selenium is already running."
        else
            export DISPLAY=localhost:99.0
            java -jar /usr/lib/selenium/selenium-server-standalone.jar -port 4444 -trustAllSSLCertificates > /var/log/selenium/output.log 2> /var/log/selenium/error.log & echo $! > /tmp/selenium.pid