I'm trying to convert a FILEHANDLE to a string so I can search and replace text and then rewrite the file.

#!/usr/bin/perl -w use strict; my $file = "/var/www/html/acs/new/index.html"; my $file_bu = "/var/www/html/acs/new/index_bu.html"; open (FILE, "+<$file") or die "Can't open file: $!"; open (FILE_BU, ">$file_bu") or die "Can't open file: $!"; # Save a back up of the original file my @file = <FILE>; #print "@file\n"; print FILE_BU "@file"; close FILE_BU; # Convert file to string for search and replace my $string = do {local $/; <FILE>}; if (defined $string) {print "defined\n"}; print "$string\n"; close FILE;

Results:

[joev@localhost test]$ ./file_handle.pl defined [joev@localhost test]$

Why does nothing get printed out for $string even though it is defined? I expected $string to be printed the same way as print "@file\n";

Is there a better way to accomplish this?

Thanks
Joe


In reply to Converting FILEHANDLE to string by joev

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.