?
[root@yang python]# vi check_ip.py
#!/usr/bin/python
import os,sys
def check_ip(ipaddr):
??????? import sys
??????? addr=ipaddr.strip().split('.')?? #切割IP地址為一個列表
??????? #print addr
??????? if len(addr) != 4:?? #切割后列表必須有4個參數
??????????????? print "check ip address failed!"
??????????????? sys.exit()
??????? for i in range(4):
??????????????? try:
??????????????????????? addr[i]=int(addr[i])?? #每個參數必須為數字，否則校驗失敗
??????????????? except:
??????????????????????? print "check ip address failed!"
??????????????????????? sys.exit()
??????????????? if addr[i]<=255 and addr[i]>=0:??? #每個參數值必須在0-255之間
??????????????????????? pass
??????????????? else:
??????????????????????? print "check ip address failed!"
??????????????????????? sys.exit()
??????????????? i+=1
??????? else:
??????????????? print "check ip address success!"
if? len(sys.argv)!=2:? #傳參加本身長度必須為2
??????? print "Example: %s 10.0.0.1 "%sys.argv[0]
??????? sys.exit()
else:
??????? check_ip(sys.argv[1])?? #滿足條件調用校驗IP函數

[root@yang python]# vi check_ip.sh
#!/usr/bin/sh
CheckIPAddr()
{
echo $1|grep "^[0-9]\{1,3\}\.\([0-9]\{1,3\}\.\)\{2\}[0-9]\{1,3\}$" > /dev/null;
#IP地址必須為全數字
??????? if [ $? -ne 0 ]
??????? then
??????????????? return 1
??????? fi
??????? ipaddr=$1
??????? a=`echo $ipaddr|awk -F . '{print $1}'`?? #以"."分隔，取出每個列的值
??????? b=`echo $ipaddr|awk -F . '{print $2}'`
??????? c=`echo $ipaddr|awk -F . '{print $3}'`
??????? d=`echo $ipaddr|awk -F . '{print $4}'`
??????? for num in $a $b $c $d
??????? do
??????????????? if [ $num -gt 255 ] || [ $num -lt 0 ]???? #每個數值必須在0-255之間
??????????????? then
??????????????????????? return 1
??????????????? fi
??????? done
??????????????? return 0
}
if [ $# -ne 1 ];then??????????? #判斷傳參數量
??????? echo "Usage: $0 ipaddress."
??????? exit
else
CheckIPAddr $1
fi