One-liner webserver

mkfifo backpipe; while true; do head -1 backpipe | (echo -n .; cut -f2 -d\ ) | xargs -L1 cat | nc -l 8080 > backpipe; done;

This is for a mac; for netcat on linux you’d say nc -l -p 8080. Note that this is in no way secure! A directory traversal attack is the most obvious one; there’s probably an injection attack, too.