Static file server in bash with netcat

serve.sh

#!/bin/bash
RESP=/tmp/server-response && rm -rf $RESP && mkfifo $RESP
while true; do
cat $RESP | nc -l 9090 | (
   REQ=$(while read -r line && [[ $line != Host* ]]; do echo "$line" ; done)
   url="${REQ% HTTP/*}"
   filedata=$(<"$(pwd)${url#* }")
cat >$RESP <<EOF
  HTTP/1.1 $([ -z "${#filedata}" ] && echo '200 OK' || echo '404 NOT FOUND')
  Content-Length: ${#filedata}

  ${filedata}
EOF
)
done