# in case the file /tmp/toto was send,
# the connection is closed but the file
# wasn't the one we expect, then the netcat server is relaunch.
# all the output not wanted are cleaned

while [ 1 ]
do
	# nc -lv  127.0.0.1 6969 2>/dev/null | grep -v ".*( )*."
	nc -lv  127.0.0.1 6969 2>/dev/null 
done