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Top Forums Shell Programming and Scripting IP address validation function Post 302110459 by hcclnoodles on Tuesday 13th of March 2007 05:58:48 AM
Old 03-13-2007
IP address validation function

Hi does anybody have a ksh/sh/bash function that i can embed into my script that i could use to validate an inputted IP address, I tried using one big long regular expression but it got very long and complicated

ie

Code:
#!/bin/ksh
echo " Please enter your IP address"
read IP
 ---some function to determine if it is valid or not

any help would be greatly appreciated
 

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let(1)                                                             User Commands                                                            let(1)

NAME
let - shell built-in function to evaluate one or more arithmetic expressions SYNOPSIS
ksh let arg... DESCRIPTION
ksh Each arg is a separate "arithmetic expression" to be evaluated. EXIT STATUS
The following exit values are returned: 0 The value of the last expression is non-zero. 1 The value of the last expression is zero. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
ksh(1), set(1), typeset(1), attributes(5) SunOS 5.10 15 Apr 1994 let(1)
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