ref: 02d09919941c8f33f93f9e643a2aebb1fea14a91
dir: /sys/src/cmd/audio/scream/screamsend/
#!/bin/rc
rfork e
lifc=()
while(~ $1 *.*.*.*){
lifc=($lifc $1)
shift
}
if(! ~ $#* 0){
echo 'Usage: audio/screamsend [interfaceip]...' >[1=2]
exit 'usage'
}
if(~ $#lifc 0) lifc=`{awk '/4u/{print $1}' /net/ipselftab}
exec audio/screamenc < /dev/audio | exec aux/trampoline -o^'addmulti '^$lifc udp!239.255.77.77!4010