For use with Transmission for Mac OSX torrent app. Make one large blocklist from the bluetack lists on iblocklist.com. Keeps updating the blocklist to block ips known to serve malware infected torrent files.

getBlockLists.sh

#!/usr/bin/env sh

# Download lists, unpack and filter, write to stdout
curl -s https://www.iblocklist.com/lists.php \
  | sed -n "s/.*value='\(http:.*=bt_.*\)'.*/\1/p" \
  | xargs wget -O - \
  | gunzip \
  | egrep -v '^#'