Thank you. Initially I want to provide a txt file with the filenames, for example, DsspCodes.txt:

2bx2.dssp
3cob.dssp
1nwn.dssp

[download]

Based on your comments and my novice use of perl, I have modified the code to: 

use strict; 
use warnings;
use Bio::Structure::SecStr::DSSP::Res;

my @filenames;
for my $filename (@filenames)
{
open my $dsspIn, '<', $filename or die "Unable to open $filename: $!\n
+";

#Create a new DSSP object
my $dssp_obj = Bio::Structure::SecStr::DSSP::Res->new ('-file'=> $dssp
+In);

....
close dsspIn;
}

[download]

But if call in the commandline:

 DSSP_output.pl DsspCodes.txt

I don't get any errors but I also don't get any output??

Thanks for your patience as I learn this..

InfoSeeker

In reply to Re^2: Confused when reading Input within Perl and Shell Scripts by InfoSeeker
in thread Confused when reading Input within Perl and Shell Scripts by InfoSeeker

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