The following code is a quick hack to demo what I need to do. Basically, find a string of text in a file and replace it with the text generated from a function. I do NOT have access to install any modules that are not standard with perl, and trying to get modules installed is like pulling teeth. The following code obviously does not work. Any ideas would be greatly welcome. 
#!/usr/bin/perl -w
use strict;

my $file = "myfile";

open(FILE,$file);
foreach (<FILE>) {

    $_ =~ s/\<REPLACE_TEXT_1\>/&replace_text_1/ if $_ =~ m/\<REPLACE_T
+EXT_1\>/;
    print "$_";

}
close(FILE);

sub replace_text_1 {

    #some stuff
    print "foobar";
    #some other stuff

}

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In reply to replacing text with a function by Anonymous Monk

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