Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

How do I sort a file with IP Addresses and another text column?

( #88295=categorized question: print w/ replies, xml ) Need Help??
Contributed by arv on Jun 14, 2001 at 08:35 UTC
Q&A  > sorting


Description:

The format of the file is like this:
1.2.3.4,1.2.3.255,USA
2.3.4.0,2.3.4.25,USA
124.2.3.0,124.2.3.255,Argentina
I need to sort the file based on IP Address, country wise
How can I do this?

Answer: How do I sort a file with IP Addresses and another text column
contributed by tadman

use Socket qw [inet_aton]; sub squish { my($ip_lo,$ip_hi,$name) = split (//,$_[0]); return $name.inet_aton($ip_lo).inet_aton($ip_hi); } @sorted = sort { squish($a) cmp squish($b) } @unsorted;
The inet_aton function returns four bytes, the value of the IP address in network order, which sorts properly using an ASCII sort. The Socket module is standard with Perl.
Answer: How do I sort a file with IP Addresses and another text column
contributed by I0

print map{sprintf(("%d.%d.%d.%d,"x2)."%s\n",(split/,/)[1..8,0])} sort map{sprintf"%s".",%3d"x8,(split/\W/)[8,0..7]} <DATA> __DATA__ 1.2.3.4,1.2.3.255,USA 2.3.4.0,2.3.4.25,USA 124.2.3.0,124.2.3.255,Argentina

Please (register and) log in if you wish to add an answer



  • 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
  • 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 musing on the Monastery: (10)
    As of 2015-07-02 22:36 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (46 votes), past polls