simple webcam server in Shell

webcam.sh

#!/bin/bash

port=8899

send_header() {
cat <<EOF
HTTP/1.0 200 OK
Content-Type: image/jpeg
Refresh: 10
Connection: Close

EOF
}

while true; do
    (
        { send_header; vgrabbj -i sxga -d /dev/video0 -a -z 10 -q 100; } | nc -l $port
    ) > /tmp/server.out 2>&1
done