The Python and Shell implementations of the verification IP address legality scripting sharing _python

One, Python verify IP address legality

Execution effect:

Python code:

Copy Code code as follows:

[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, or the checksum fails
Except
print "Check IP address failed!"
Sys.exit ()
If addr[i]<=255 and addr[i]>=0: between #每个参数值必须在0-255
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

Second, the shell verify the legality of IP address

Implementation of the School fruit:
The return value of 0 is verified to be valid, not 0 illegal.

Shell code:

Copy Code code as follows:

[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 '} ' #以. ' Separate, remove the value of each column
B= ' echo $ipaddr |awk-f. ' {print $} '
C= ' echo $ipaddr |awk-f. ' {print $} '
D= ' echo $ipaddr |awk-f. ' {print $} '
For num in $a $b $c $d
Todo
If [$num-gt 255] | | [$num-lt 0] #每个数值必须在0-255
Then
Return 1
Fi
Done
return 0
}
If [$#-ne 1];then #判断传参数量
echo "Usage: $ ipaddress."
Exit
Else
CHECKIPADDR $
Fi