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[/] [openrisc/] [trunk/] [gnu-stable/] [get-ip.sh] - Rev 853
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#!/bin/bash # Copyright (C) 2010 Embecosm Limited # Contributor Jeremy Bennett <jeremy.bennett@embecosm.com> # A script to get the IP of the next available Linux session # This program is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the Free # Software Foundation; either version 3 of the License, or (at your option) # any later version. # This program is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for # more details. # You should have received a copy of the GNU General Public License along # with this program. If not, see <http://www.gnu.org/licenses/>. # ------------------------------------------------------------------------------ # Usage # ./get-ip.sh [--rotate] [--delete <ip_address>] # Get the top IP address from a file of addresses, rotating it to the bottom # of the file if --rotate is specified. Delete the given IP address if # --delete is specified. ipfile=`dirname ${DEJAGNU}`/ip-avail.txt tmp=/tmp/get-ip-$$ lockfile=`dirname ${DEJAGNU}`/get-ip-lockfile arg1=$1 arg2=$2 # Lock all the file manipulation. ( flock -e 200 # Check we have an IP address available if [ ! -s ${ipfile} ] then echo "No IP addresses available" >&2 exit 255 fi # Get the top IP address ip=`head -1 ${ipfile}` # Optionally move it to the bottom of the IP file or delete it if [ "x--rotate" == "x${arg1}" ] then tail -n +2 ${ipfile} > ${tmp} echo ${ip} >> ${tmp} mv ${tmp} ${ipfile} fi if [ "x--delete" == "x${arg1}" ] then sed -i ${ipfile} -e "/${arg2}/d" fi # Echo the IP address unless we are deleting if [ "x--delete" != "x${arg1}" ] then echo ${ip} fi ) 200> ${lockfile}
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