UNIX for Dummies Questions & Answers

echo "insert dest ip" 
read ip1
echo "insert first port of the range"
read p1
echo "insert last port of the range"
read pn
echo $ip1 >> myips.txt
echo $p1 $pn | awk '{ for (i=$1;i<=$2;i++) { print i} }'>> myports.txt
for ip in $('cat' myips.txt)
do
for port in $('cat' myports.txt)
do
echo ""
echo ""
echo "telnet $ip $port" >> result.txt
sleep 1 | telnet $ip $port >> result.txt 2>&1
echo "" >> result.txt
echo "" >> result.txt
done
echo "Done. See result.txt"" 
done

read ip1?"insert dest ip: "

port=$p1
while [ $port -le $pn ]
do
   # All the logging & active stuff here
  ((port=$port+1))
done

#!/bin/ksh
touch myips.txt myports.txt result.txt
rm myips.txt myports.txt result.txt
read ip1?"insert dest ip: "
read p1?"insert first port of the range (or the unique one): "
read pn?"insert last port of the range (or the unique one): "
echo $ip1 >> myips.txt
echo $p1 $pn | awk '{ for (i=$1;i<=$2;i++) { print i} }'>> myports.txt
for ip in $('cat' myips.txt)
do
   for port in $('cat' myports.txt)
   do
       echo ""
       echo ""
       echo "telnet $ip $port" >> result.txt
       sleep 1 | telnet $ip $port >> result.txt 2>&1 &
       echo "Telnet in progress..saving results to "result.txt"" 
       PID=$!
       sleep 2
       if [ $(ps -efa | grep $PID |grep -v grep|grep -v defunct| wc -l) -eq 1 ]; then
          TMOUT_CONN=$(ps -efa | grep $PID |grep -v grep|grep -v defunct| awk '{print $9,$10}') 
           kill -9 $PID
           echo "PID $PID still UP after 2 seconds, connection to $TMOUT_CONN is in Trying state.\nSubprocess Killed"
       fi
   done
done