scripting fun

[Bart Silverstrim]

Okay...closer...combining what others have given (thank you everyone!), 
I currently have
******
#!/bin/sh

grep -i slurp /var/log/apache-perl/access.log |awk '{print$1}' > 
~/temp/tmp.txt
sort ~/temp/tmp.txt > ~/temp/tmp2.txt
uniq ~/temp/tmp2.txt > ~/temp/slurps.txt

iptables -L INPUT -v -n |awk '{print$8}' |grep '[0-9]' > ~/temp/blocked.txt

join -v2 < (sort <~/temp/blocked.txt | uniq ) < (sort <~/temp/slurps.txt 
| uniq ) > ~/temp/newaddresses.txt

for i in `cat ~/temp/newaddresses.txt`
do
	iptables -A INPUT -s $i -j DROP
done
******
The command line of join... worked, but bash is trying to reorder 
something near the parenthesis and that causes it to stop the script. 
Trying \ didn't seem to help so I am probably missing something obvious.