Hello Monks -- quick question for ya guys i thought i could slurp the whole file from command line using the following code, havent had any luck. wonder if can't do this from the commandline -- if i replaced the /n with // it shows up in one line but was wondering why it wouldnt work with undef $/ Thanks and Happy New Year!

perl -e 'undef $/; $text=<>; print $text; $/="\n";' list

list contains the following information
server1 ipaddress
server2 ipaddress
server3 ipaddress
etc ..
graff: thanks -
Went with the following to do what i wanted :

perl -e 'undef $/; $text=<>; $text =~ tr/\n//; 1 while $text =~ s/\b( +\w+\d+\s*\d+\.\d+\.\d+\.\d+)\s*\1\b/$1/ig; print $text; $/="\n"; list

basically deletes the duplicates entries one after the other with "slurping"


In reply to $/ usage by mimiandi

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, details, 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, summary, 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.