Shell Acript Help

[Vishal Agarwal]

Hi,
I have created the below shell script:

#!/bin/bash
TotalData=$(grep dove /var/log/auth.log | grep "authentication failure" | awk '// {print $13 "," $14}' | replace "ruser=" "" | replace "rhost=" "")
$(iptables -F input-pop-hack-blocked)
for i in $TotalData
do
UserName=$(echo $i | cut -d"," -f 1)
UserIp=$(echo $i | cut -d"," -f 2)
echo "UserName = $UserName , UserIp = $UserIp "
if [ -d "/home/$UserName" ]; then
{
(echo "User $UserName Exist")
}
else
{
(echo "User $UserName does not Exist")
if [$(iptables -L input-pop-hack-blocked -vn | grep $UserIp)]; then
{
(echo "iptables -A input-pop-hack-blocked -i eth1 -s $UserIp -p tcp --dport 110 -j DROP")
$(iptables -A input-pop-hack-blocked -i eth1 -s $UserIp -p tcp --dport 110 -j LOG --log-level 4 --log-prefix " FW POP $UserIP DROP")
$(iptables -A input-pop-hack-blocked -i eth1 -s $UserIp -p tcp --dport 110 -j DROP)
$(echo "iptables -A input-pop-hack-blocked -i eth1 -s $UserIp -p tcp --dport 110 -j DROP") >> /var/log/HackPopAuthMessage
}
else
{
(echo " IP Address $UserIp for Username $UserName aleeady added to firewall ")
}
fi
}
fi
done

I am getting the following error.

./HackPopAuth: line 17: []: command not found

Seeking help to resolve this problem.
Any help welcome.

[Vaphell]

what's up with all these {} ()? and captured commands doing nothing? o.O
this code doesn't look like your average shell script at all



_ = space here

if [_<stuff>_]

error is located here:

if [$(iptables -L input-pop-hack-blocked -vn | grep $UserIp)]; then

[Vishal Agarwal]

Thanks for the reply.

i am sorry; I did not get your point. I can understand this is some very basic error; but I am facing this for long and did not get the logic for the same.

It will be a great help if you can hemp me in a bit detailed manner.

Thanks again.

[Vishal Agarwal]

Hi Thanks for your reply again. I got the solution here
http://www.linuxcommand.org/wss0100.php


thanks again