nextstep

DHCP动态IP获取的源代码

#!/bin/sh
#
# simplified dhclient-script for NeXTSTEP/OPENSTEP
#
# removed a lot of the cruft from the netbsd version since NeXTSTEP doesn't
# support aliases and lots of things were breaking for no good reason
#
# 14 Sep 1997, David W. Young
#
if [ x$reason = xPREINIT ]; then
  ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 up >/dev/null 2>&1
  exit 0
fi
if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
   [ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then
  if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]; then
    ifconfig $interface $new_ip_address netmask $new_subnet_mask >/dev/null 2>&1
    route add $new_ip_address 127.1 0 >/dev/null 2>&1
    for router in $new_routers ; do
      route add default $router 1 >/dev/null 2>&1
    done
  fi
  echo search $new_domain_name >/etc/resolv.conf
  for nameserver in $new_domain_name_servers; do
    echo nameserver $nameserver >>/etc/resolv.conf
  done
  exit 0
fi
if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ]; then
  if [ x$old_ip_address != x ]; then
    route delete $old_ip_address 127.1 >/dev/null 2>&1
    for $router in $old_routers ; do
      route delete default $router >/dev/null 2>&1
    done
  fi
  exit 0
fi