I have a few gigs of *.gz files and I want to extact a list of IP addresses from it. The command I am using is kind of working but it is not extracting the exact results.

For example, I have been using the follwing command;

zgrep --no-filename -e 10.0.0.9 -e 10.0.0.15 -e 10.0.0.244 -e 10.0.0.18 -e 10.0.0.200 -e 10.0.0.111 -e 10.0.0.18 *.gz > outputfile.out

If the lines end with the IP address, then you can try this...

zgrep -e "10.0.0.9$" *.gz

Try word matching

zgrep -w -F -f random_ip.txt *.gz

zgrep -w -o -F -f random_ip.txt *.gz

I found another way, your method works but it takes extremely long on huge and lots of files, not sure how it reads it.

This method works by reading from a list of IP addresses that you want to grep;

zgrep -w -F -f iplist.txt *.gz > iplist.out