Mercurial > hg > aboriginal
view sources/toys/unique-port.sh @ 1248:3e7bf55b1bfb
Tighten up test.sh usage message.
author | Rob Landley <rob@landley.net> |
---|---|
date | Wed, 15 Sep 2010 18:06:30 -0500 |
parents | 1cdd44f2bac2 |
children |
line wrap: on
line source
unique_port() { # Try to find an unused port number for each running instance of the program. START=8192 RANGE=$[$(awk '{print $1}' /proc/sys/net/ipv4/ip_local_port_range)-$START] if [ $RANGE -lt 8 ] then START=$[$(awk '{print $2}' /proc/sys/net/ipv4/ip_local_port_range)] RANGE=$[65535-$START] if [ $RANGE -lt 8 ] then START=16384 RANGE=32768 fi fi echo $[($$%$RANGE)+$START] }