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Perl script to generate a file with ip address input

by hikabusha (Initiate)
on Mar 28, 2017 at 14:24 UTC ( [id://1186253]=perlquestion: print w/replies, xml ) Need Help??

hikabusha has asked for the wisdom of the Perl Monks concerning the following question:

Newbie here. I am trying to create a Perl script to be used in Linux to take an input of an ip address and ultimately randomize it.
Note: Input can be a single IP, network with CIDR, or network range Separate <IPADDRESS> with a single space

2. Output will be a list of IPs, one per line sent to STDOUT

3. Output can be redirected to a file or piped to another command “>” or “>>” will redirect to a file.

4. Select a randomization method and create a switch for Linux preferably "-r"

5. Use the “-r” switch to randomize the output and redirect to file ie perl script = ip_randomizer -r <IPADDRESS> > <FILENAME>
  • Comment on Perl script to generate a file with ip address input

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Re: Perl script to generate a file with ip address input
by kennethk (Abbot) on Mar 28, 2017 at 15:58 UTC
    Subject to the "Show us what you tried, so we can help you learn" that the previous posts have tried to express, here are some comments. This sounds a lot like a homework assignment, so you'll have to excuse some skepticism.
    take an input of an ip address and ultimately randomize it.

    What do you mean by "randomize"? I could guess for a CIDR or a range, but it's not clear what you would do for a single entry.

    2. Output will be a list of IPs, one per line sent to STDOUT
    And how do you know how many lines? If you are randomizing, as opposed to just outputting all permutations, there is no clear end to the algorithm if you might want more than 1.
    3. Output can be redirected to a file or piped to another command “>” or “>>” will redirect to a file.
    That's what |, > and >> do to STDOUT on a *NIX command line.
    Select a randomization method and create a switch for Linux preferably "-r"
    See Getopt::Std or Getopt::Long
    5. Use the “-r” switch to randomize the output and redirect to file ie perl script = ip_randomizer -r <IPADDRESS> > <FILENAME>
    This is unclear to me, particularly in light of 3 and 4.

    If you can clarify, and tell us what you tried and what didn't work, we can be much more helpful.


    #11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

Re: Perl script to generate a file with ip address input
by marto (Cardinal) on Mar 28, 2017 at 14:30 UTC

    "I am trying to create a Perl script"

    Welcome, which part of your task are you having problems with. Please read and understand How do I post a question effectively? and update your post so that it's an actual question rather than some short specification.

Re: Perl script to generate a file with ip address input
by stevieb (Canon) on Mar 28, 2017 at 14:29 UTC

    Welcome to the Monastery, hikabusha!

    Please show us the code that you've already written and we'll go from there. This site isn't a code writing service. We don't do people's jobs or homework without them showing some effort that they've tried to do the work themselves first :)

Re: Perl script to generate a file with ip address input
by 1nickt (Canon) on Mar 28, 2017 at 14:29 UTC

    Hello hikabusha,

    hikabusha has asked for the wisdom of the Perl Monks concerning the following question:

    ... sorry, I missed it. What is your question?

    ( See Posting on PerlMonks for some guidelines that will get you better answers, if you follow them. )


    The way forward always starts with a minimal test.
Re: Perl script to generate a file with ip address input
by NetWallah (Canon) on Mar 28, 2017 at 23:07 UTC
    Consider using the module NetAddr::IP to generate IP ranges.

    There are several other similar module in that namespace that could do that job.

            ...it is unhealthy to remain near things that are in the process of blowing up.     man page for WARP, by Larry Wall

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