BlackSheep For Linux

This is a concise build-and-install guide for running BlackSheep (based on Firesheep) on Linux: it lists prerequisites (autoconf, libpcap-devel, xulrunner-sdk, boost), details compiling newer autoconf and libpcap on CentOS, shows how to compile the Firesheep backend, validate packet capture, package the BlackSheep XPI with the Linux backend, and fix backend permissions. The instructions enable users to create a Linux-compatible BlackSheep plugin to capture HTTP traffic.