[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地址为一个列表         #print addr         if len(addr) != 4:   #切割后列表必须有4个参数                 print "check ip address failed!"                 sys.exit()         for i in range(4):                 try:                         addr[i]=int(addr[i])   #每个参数必须为数字，否则校验失败                 except:                         print "check ip address failed!"                         sys.exit()                 if addr[i]<=255 and addr[i]>=0:    #每个参数值必须在0-255之间                         pass                 else:                         print "check ip address failed!"                         sys.exit()                 i+=1         else:                 print "check ip address success!" if  len(sys.argv)!=2:  #传参加本身长度必须为2         print "Example: %s 10.0.0.1 "%sys.argv[0]         sys.exit() else:         check_ip(sys.argv[1])   #满足条件调用校验IP函数

[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地址必须为全数字         if [ $? -ne 0 ]         then                 return 1         fi         ipaddr=$1         a=`echo $ipaddr|awk -F . '{print $1}'`   #以"."分隔，取出每个列的值         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 ]     #每个数值必须在0-255之间                 then                         return 1                 fi         done                 return 0 } if [ $# -ne 1 ];then            #判断传参数量         echo "Usage: $0 ipaddress."         exit else CheckIPAddr $1 fi