defroute

一个在LINUX下运行的东西

#!/bin/bash

PATH="$PATH:/sbin:/bin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/locale/sbin"

route="route -n"

get_ppp_gw()
{
 if ifconfig |grep ppp -q ;then
  ifconfig |grep  "P-t-P"|sed -e 's/.*P-t-P://'|tr '\n' ' '|awk '{print $1}'
 else
  echo no;
 fi
}

gw=192.168.0.1
if [ x$1 = xgw ];then
  gw=$2
else
  gw=192.168.0.$1
fi

[ "$gw" == "ppp" ] && gw=$(get_ppp_gw) ;
[ "x$1" == "x" ] &&  exit 1 ;
[ $UID == 0 ] || cmd="sudo" ;
[ "$gw" == "no" ] && exit 1;
( $route|grep -q -E "^default|^0.0.0.0" ) && $cmd route del default ;
$cmd route add default gw $gw ;
route -n ;
#exit 0