Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

It seems like what you are asking is how to provide a default arg to the command line in the case that a command line field is not populated. ...or maybe you're asking how to parse your project.txt file, though that seems less likely since your question never explicitly mentioned that. So let's go with "I have a script that should use a default command line arg value when one isn't passed in explicitly."

use strict; use warnings; my $file = "foo.txt"; # Set a default. use Getopt::Long; GetOptions( 'file=s' => \$file, # Default will be used unless --file ... appea +rs on command line. ); print $file, "\n"; # prints 'foo.txt' unless the command line explicit +ly set something else.

If that's not what you're asking, please step back from your problem long enough to re-read your question, imagining you are someone who has no context on what you're trying to do, and rephrase the question in a way that would still make sense.

Also, you still seem to be struggling with how to format your posts here. Have a look at Writeup Formatting Tips. Hopefully that will clear things up for you.


Dave


In reply to Re: How to read the input directory from command line arguments using perl? by davido
in thread How to read the input directory from command line arguments using perl? by finddata

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others about the Monastery: (4)
    As of 2020-02-17 06:02 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?
      What numbers are you going to focus on primarily in 2020?










      Results (70 votes). Check out past polls.

      Notices?