| leventis |
09-27-2006 12:32 PM |
Random file lines directed to a new file. In script an error. In command line no err
Sorry for the longs subject.. I ment to make it descriptive
By performing the following command on the command prompt no error is received. The job is performed correctly.
cat test1 |while read l ; do echo "0$RANDOM $l" ; done|sort -n -o test1.shi
If I put the following line in a script I receive the following error.
redirection error: cannot duplicate fd: Too many open files
Full script code
Code:
#Sort text file
sort()
{
sort $filename.on > $filename.on.done
sort $filename.off > $filename.off.done
rm -rf $filename.on
rm -rf $filename.off
mv $filename.on.done $filename.on
mv $filename.off.done $filename.off
rm -rf $filenameBAK
}
if [ $# -lt 1 ]
then
#call usage function
usage
fi
#Variables
filename=$1
filenameBAK="$1BAK"
debug="echo"
#debug=":"
cat $filename |
while read line #read each line of the file into variable line
do
#randomize text file
#ERROR EHRE~~~
cat test1 |while read l ; do echo "0$RANDOM $l" ; done|sort -n -o test1.shi
#Generate random port
rand=0
RANGE=65535 #total ports
FLOOR=1025 # greater than 1024 (eliminating root ports)
while [ "$rand" -le $FLOOR ]
do
rand=$RANDOM
let "rand %= $RANGE" # Scales $number down within $RANGE.
done
$debug "Random number between $FLOOR and $RANGE --- $rand"
#end of generate random port
#Split ip from host name to use it
oldifs="$IFS"
$debug "input line is :$line:"
IFS="${IFS}=" #IFS BEFORE USING!
set -- $line #use line splited from ip=dns to ip dns ($1 $2)
ip=$1
dns=$2
$debug "IP: $1"
$debug "DNS: $dns"
IFS="$oldifs"
#End of splitting ip and dns
#Search crafted string and execute command
#Special
# -p random number
# -i time (waittime, 20 secs)
#-s port (source port)
#--keep
#./hping2 -c 1 -A -V -p $rand -i time
#Send one packet, ACK, Verborse, at random port, every 20 secs, source port 80
#./hping2 -c 1 -A -V -p $rand -i 20 -s 80 --keep $ip
# Find: 1 packets tramitted, 1 packets received, 0% packet loss
status="" #ON/OFF
#hping output is not the statistics.. its the response
#ACK returns RST flag
./hping2 -c 1 -A -V -p $rand -i 20 -s 80 --keep $ip |grep "flags=R"
# $? stands for last commands exit status
# If its 0 then grep was successfull and host is alive :)
if [ "$?" -eq "0" ]; then
status="ON"
echo "$status $ip=$dns" >> $filename.on
else
status="OFF"
echo "$status $ip=$dns" >> $filename.off
fi
$debug "Status: $status"
#End of search crafted string
sort #call sort funtion
done
Thanks in advance! |
