Please put <c> ...</c> tags around your code. It is unreadable.

Dum Spiro Spero

Sorry, I was not aware of your name. Your tag line is cool. :) So far I have written this much of code. The power directory has two directories and in those directories. There are 130 sub directories for each directories. I want to go to each sub directory and get a pattern from a text file in that directory. I am stuck with how to check directories and get that perticular pattern. mdp is a pattern. Your help will be greatly appreciated.

 
  #!usr/bin/perl;
  
  use strict;
  use warnings;
  

  $| = 1;
 

   sub main{
 
   my $directory = '/nfs/fm/stod/stod1031/w.eakanoje.101/power/';
   opendir (DIR, $directory) or die "Cannot open directory $directory"
+;
  # while (my $file = readdir(DIR)){
   # next if($file =~ m/^\./); 
  # print "$file\n";
   # }
  
   my @out = glob("mdp*");
 
   print "@out\n";
   }
   main();
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Note: Do not include line numbers in your code posts. It makes them not compile.

Go to your Profile->{settings}->{display settings}->{code Prefix} and set it to something like "&001;: "; That will give you line numbers when viewing on perlmonks without breaking the actual code.

by

get a pattern from a text file

do you mean
• list only file names that match a pattern
• read a pattern from a file's contents?
"get a pattern" sounds like the latter, but your example looks more like the former.

I like Path::Tiny for such tasks, e.g. the following would show you all files in the tree where the name starts with "mdp". Note this doesn't use shell patterns like glob (with * and ?) but perl's own regexes.

use strict;
use warnings;
use Path::Tiny qw/path/;

for ( path('/nfs/fm/stod/stod1031/w.eakanoje.101/power/')->children( q
+r/^mdp/ ) ) {
    print $_ . $/;
}
[download]

Thanks a lot soonix.