Hi tobyink, Thank you for replying. You, Neighbour, and the other Monks really helped me out. But I wanted to ask you how should I close the filehandle $fh after it has been opened? I've written my code somewhat similar to you and Neighbours but I am not sure if it is correct. Here is a snippet of the problem:

sub my_close {
    my( $fh ) = @_;                                                   
+                                               
    close($fh) or die "$!\n";
}                                                                     
+                                               
sub my_open {                                                         
+                                               
    my( $file, $mode ) = @_;                                          
+                                               
    open my $fh, $mode, $file or die "$!\n";                          
+                                               
    return $fh;
}
sub errors {                                                          
+                                               
    my( $file, $mode ) = @_;
    my $fh = my_open($file, $mode);
    my @errors = ();
    while( <$fh> ) {
        chomp;                                                        
+                                               
        next if /^[a-z]/;
        push( @errors, qq(Line $. '$_' does not begin with lowercase l
+etter.) );                                     
    }
    my_close($fh); # Safe to close file like this???                  
+                                                                     
+           
    return @errors;
}
[download]

Thank you.