Share the script for verifying IP address legality implemented by python and shell, pythonshell

Share the script for verifying IP address legality implemented by python and shell, pythonshell

I. Check IP address validity in python

Execution result:

Python code:

Copy codeThe Code is 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 ('.') # Cut the IP address into a list
# Print addr
If len (addr )! = 4: # The list after cutting must have four parameters
Print "check ip address failed! "
Sys. exit ()
For I in range (4 ):
Try:
Addr [I] = int (addr [I]) # each parameter must be a number; otherwise, verification fails.
Except t:
Print "check ip address failed! "
Sys. exit ()
If addr [I] <= 255 and addr [I]> = 0: # each parameter value must be between 0 and.
Pass
Else:
Print "check ip address failed! "
Sys. exit ()
I + = 1
Else:
Print "check ip address success! "
If len (sys. argv )! = 2: # The input length must be 2
Print "Example: % s 10.0.0.1" % sys. argv [0]
Sys. exit ()
Else:
Check_ip (sys. argv [1]) # The IP address verification function is called to meet the condition.

2. verify the validity of IP addresses using shell

Execution result:
The value 0 is valid, and the value 0 is invalid.

Shell code:

Copy codeThe Code is 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;
# The IP address must be a full number.
If [$? -Ne 0]
Then
Return 1
Fi
Ipaddr = $1
A = 'echo $ ipaddr | awk-F. '{print $1}' # separated by "." To retrieve the values of each column
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] # each value must be between 0 and.
Then
Return 1
Fi
Done
Return 0
}
If [$ #-ne 1]; then # determine the parameter quantity
Echo "Usage: $0 ipaddress ."
Exit
Else
CheckIPAddr $1
Fi

Python calls the shell script to obtain the output value in the middle of the shell script.

You try to read it with a while loop. I can see it only once from your code ..
 
How does python call shell scripts with parameters?

Example: shell script: t. sh Content: echo "this is a test shell with arguments" echo "arg1 = $1; arg2 = $2;" run the script. /t. sh zhao result: [noncode @ gnode108 knockdown_workflow] $. /t. sh zhao1 zhao2this is a test shell with argumentsarg1 = zhao1; arg2 = zhao2; python script: [noncode @ gnode108 knockdown_workflow] $ cat t. py #! /Usr/bin/env pythonimport osimport sysdef main (): print 'Hello world! 'If len (sys. argv) <2: print "usage: % s config log" % (sys. argv [0]) sys. exit (1) arg0 = sys. argv [0] arg1 = sys. argv [1] print "arg0 = % s; arg1 = % s" % (arg0, arg1) print "test. /t. sh: "OS. system ('. /t. sh' + arg0 + ''+ arg1) print" test method of replacing: "t ='t. sh'm = 'zhao' n = 'zhao' cmd = ". /% s "% (t, m, n) print" t = % s; m = % s; n = % s; cmd = % s "% (t, m, n, cmd) OS. system (cmd) if _ name _ = '_ main _ ': Main () running script: python t. py t. sh execution result: [noncode @ gnode108 knockdown_workflow] $ python t. py t. shHello world! Arg0 = t. py; arg1 = t. shtest. /t. sh: this is a test shell with argumentsarg1 = t. py; arg2 = t. sh; test method of replacing: t = t. sh; m = zhao; n = zhao; cmd =. /t. sh zhao zhaothis is a test shell with argumentsarg1 = zhao; arg2 = zhao; [noncode @ gnode108 knockdown_workflow] $ cat t. sh echo "this is a test shell with arguments" echo "arg1 = $1; arg2 = $2;" [noncode @ gnode108 knockdown_workflow] $. /t. sh zhao1 zhao2this is a test shell with ar ...... remaining full text>