pistar-jittertest

#!/bin/bash
#
###############################################################################
#                                                                             #
#                          Pi-Star Jitter Tester                              #
#                                                                             #
#    Version 0.1, Code, Design and Development by Andy Taylor (MW0MWZ).       #
#                                                                             #
###############################################################################
#
if [ "$(id -u)" != "0" ]; then
  echo -e "You need to be root to run this command...\n"
  exit 1
fi

exec 200>/var/lock/pistar-jitter.lock || exit 1
if ! flock -n 200 ; then
  echo -e "Another instance is already running...\n"
  exit 1
fi

pingTest() {
	hostp=${1}
	# Clean up the Hostname
	vanityName=$(tr -dc '[[:print:]]' <<< "${2}")
	# Ping Test
	pingTest=$(ping -W 2 -c 1 ${hostp} 2>/dev/null)
	if [ $? -eq 0 ]; then
#	if ping -W 2 -c 1 ${1} &> /dev/null; then
		pingIP=$(echo ${pingTest} | awk '{print $3}')
		if [ "(${hostp})" == "${pingIP}" ]; then  pingIP=""; fi
		pingResult=$(ping -W 2 -n -c 5 ${hostp} 2>/dev/null | grep "from" | tail -n 3 | awk -F 'time=' '{print $2}' | awk '{print $1}' | sort -g)
		pingTestLow=$(echo ${pingResult} | awk '{print $1}')
		pingTestMid=$(echo ${pingResult} | awk '{print $2}')
		pingTestHigh=$(echo ${pingResult} | awk '{print $3}')
		pingTestTotal=$(awk "BEGIN { printf \"%.2f\n\", ${pingTestHigh} + ${pingTestMid} + ${pingTestLow} }")
		pingTestAvg=$(awk "BEGIN { printf \"%.2f\n\", ${pingTestTotal} / 3 }     ")
		pingTestPeakDev=$(awk "BEGIN { printf \"%.2f\n\", ${pingTestHigh} - ${pingTestLow} }")
		echo ${vanityName},${hostp} ${pingIP},Avg RTT: ${pingTestAvg}ms,Peak Deviation: ${pingTestPeakDev}ms | awk -F"," '{printf "%-35s %-53s %-20s %-20.30s\n", $1, $2, $3, $4}'
	else
		echo ${vanityName},${hostp},unreachable...| awk -F"," '{printf "%-35s %-53s %-20s\n", $1, $2, $3}'
	fi
}

main_function() {
 case "${1}" in
    NXDN)
        while IFS="" read -r hostLine || [ -n "$p" ]
        do
                        vanityName=$(echo ${hostLine} | awk '{print $2}')
                        host=$(echo ${hostLine} | awk '{print $2}')
                        pingTest ${host} ${vanityName} &
        done < /usr/local/etc/NXDNHosts.txt
        ;;
    P25)
        while IFS="" read -r hostLine || [ -n "$p" ]
        do
                        vanityName=$(echo ${hostLine} | awk '{print $2}')
                        host=$(echo ${hostLine} | awk '{print $2}')
                        pingTest ${host} ${vanityName} &
        done < /usr/local/etc/P25Hosts.txt
        ;;
    M17)
        while IFS="" read -r hostLine || [ -n "$p" ]
        do
                 if [[ ! "${hostLine:0:1}" == "#" ]]; then
                        vanityName=$(echo ${hostLine} | awk '{print $1}')
                        host=$(echo ${hostLine} | awk '{print $2}')
                        pingTest ${host} ${vanityName} &
                 fi
        done < /usr/local/etc/M17Hosts.txt
        ;;
    YSF)
        while IFS="" read -r hostLine || [ -n "$p" ]
        do
                 if [[ ! "${hostLine:0:1}" == "#" ]]; then
                        vanityName=$(echo ${hostLine} | awk -F";" '{print $2}')
                        host=$(echo ${hostLine} | awk -F";" '{print $4}')
                        pingTest ${host} ${vanityName} &
                 fi
        done < /usr/local/etc/YSFHosts.txt
        ;;
    *)
        while IFS="" read -r hostLine || [ -n "$p" ]
        do
                if [[ ${hostLine} == ${1}_* ]]; then
                        vanityName=$(echo ${hostLine} | awk '{print $1}')
                        host=$(echo ${hostLine} | awk '{print $3}')
                        pingTest ${host} ${vanityName} &
                fi
        done  < /usr/local/etc/DMR_Hosts.txt
        ;;
  esac
}

if [ -z "$1" ]; then
	thisScript="$(basename "$(test -L "$0" && readlink "$0" || echo "$0")")"
	echo "This script ${thisScript} takes a single argument,"
	echo "the prefix of the group of hosts you want to check"
	echo "as used in the /usr/local/etc/DMR_Hosts.txt file."
	echo ""
	echo "For example: ${thisScript} BM"
	echo "This will test against all hosts starting with BM"
	exit 0
fi

if [ -t 1 ]; then
  # run via terminal, only output to screen
  main_function ${1}
  wait
  echo -e "\n-- End of tests"
else
  # if not run via terminal, log everything into a log file
  main_function ${1} >>                        /tmp/jittertest.log 2>&1
  wait
  echo -e "\n-- End of tests\n" | sudo tee -a  /tmp/jittertest.log
fi

exit 0