So for a forum spam filter I need to extract the spam bot IP addresses from, and converts it into a single file with an IP address for each line.

I got stuck at this sed command:

sed -n -e '/,/,/div/p' banlist.php > banlist
But there is still html code at the end of the line that needs to be removed, but I didn't succeed in finding the sed command for that. Also the sed command I tryed for replacing the commas with line breaks isn't working:

sed 's/,/\n/g' csv.file  > linefeed.file
Any help?