Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

Comment on

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

This will create output files split1 through split4. They will vary slightly in size in order that each file contains complete lines. The memory usage is minimal:

#! perl -sw use strict; open I, '<', $ARGV[0] or die $!; seek I, 0, 2; my $n = int( tell( I ) / 4 ); seek I, 0, 0; my $s = $n; for my $i ( 1 .. 4 ) { open O, '>', "split$i" or die $!; while( tell( I ) < $s ) { print O scalar <I>; } $s += $n; close O; } __END__ C:\test>dir words.txt 17/07/2011 15:52 1,941,858 words.txt C:\test>split4 words.txt C:\test>dir split* 08/02/2013 00:41 485,470 split1 08/02/2013 00:41 485,458 split2 08/02/2013 00:41 485,468 split3 08/02/2013 00:41 485,462 split4 08/02/2013 00:38 298 split4.pl

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: Split file into 4 smaller ones by BrowserUk
in thread Split file into 4 smaller ones by Anonymous Monk

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!
  • 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
  • Outside of code tags, you may need to use entities for some characters:
            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 examining the Monastery: (15)
    As of 2014-07-11 15:16 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      When choosing user names for websites, I prefer to use:








      Results (230 votes), past polls