Mercurial > hg > aboriginal
view sources/toys/unique-port.sh @ 1529:90da269bc09c
Minor cleanup and remove hardlinking for chroot-splice: it's slower and uses more disk space but doesn't damage external copy if something goes wrong.
author | Rob Landley <rob@landley.net> |
---|---|
date | Sun, 10 Jun 2012 20:34:04 -0500 |
parents | 1cdd44f2bac2 |
children |
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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] }