#!/bin/bash
for (( ; ; ))
do
webcam ~/.webcamrc.0 > /dev/null 2>&1 &
webcam ~/.webcamrc.1 > /dev/null 2>&1 &
...
webcam ~/.webcamrc.N > /dev/null 2>&1 &
sleep N
curl --socks5-hostname localhost:3128 --upload-file "/home/dummy/webcam/pmc3tv{0,1,...,N}.jpg" ftp://dummy-ftp:secret@pmclab.fr/
done