tcpping-sp

#!/bin/sh -e
#
# Copyright (c) 2016, Torbjörn Lönnemark <tobbez@ryara.net>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

if [ $# != 5 -a $# != 4 ]
then
	echo "Wrong number of arguments"
        exit
fi

output="$4 :"
for i in $(seq $3)
do
	portflag=""
	if [ $# = 5 ]
	then
		portflag="-p $5"
	fi
	tr=$(traceroute -n -T -f 255 -m 255 -q 1 -w 0.5 $portflag $4 2>&1| tail -n1 | sed 's/  / /g')
	if ! echo "$tr" | grep 'ms$' > /dev/null
	then
		output="$output -"
	else
		ms=$(echo "$tr" | cut -d" " -f3)
		output="$output $ms"
	fi
done
echo $output