I'm not sure what you think the print "1\n" does but if you want to output to a file use 
use strict;
use warnings;

my $file="test_file.txt";
my $StrSearch = "calendar: Calendar_1_test";
open TEST, $file;

open OUT,">result.txt";

while (<TEST>) {
  if (/$StrSearch/) {
    print OUT;
    while (<TEST>){
      if (/^calendar/){
        last;
      } else {
        print OUT;
      }
    }
  }
}
close TEST;
close OUT;

[download]

poj

In reply to Re: How do I extract data? by poj
in thread How do I extract data? by cutter

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