I would probably use split or a regex to grab the IP address string (and the last octet range) from each line of the file. Then I would step from the beginning of the range to the end of the range, constructing each IP address and writing it out as I went.
So, you'll want to do the following things:
- Open the file (and do something sensible if that fails)
- process each line of the file in some sort of loop (maybe a while)
- extract the IP address substring from each line
- determine if the IP address is a singleton or a range
- if it is a singleton, write it out to your file or whatever
- if it is a range, step through from the start to the end part of the last octet, constructing a series of singleton IP addresses and writing them out.
Show us what you have tried, and we'll be glad to help!
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|
