Read the new lines into a new list then push the new lines onto the end of the master list:

use strict;
use warnings;

my @list;

foreach my $DIR qw(TEST_DIR WINS_DIR) {
    if (defined($ENV{"$DIR"})) {
        my $filename = $ENV{"$DIR"} . "/common/wins.ini";
        if (-s $filename) {
            open (IN,$filename);
            my @newList = <IN>;
            close (IN);
            
            chomp @newList;
            push @list, @newList;
        }
    }
}

[download]

Note too the use of strictures: use strict; use warnings;. All your code should use strictures!

Update: You may find that using next cleans up the code by reducing nesting thus making it easier to see the important program flow:

use strict;
use warnings;

my @list;

foreach my $DIR qw(TEST_DIR WINS_DIR) {
    next unless defined($ENV{"$DIR"});
    
    my $filename = $ENV{"$DIR"} . "/common/wins.ini";
    
    next unless -s $filename;

    open (IN,$filename);
    my @newList = <IN>;
    close (IN);
    
    chomp @newList;
    push @list, @newList;
}

[download]

Oh, and you should use the three parameter open too. ;)

open IN, '<', $filename;

[download]
DWIM is Perl's answer to Gödel

In reply to Re: Adding to array by GrandFather
in thread Adding to array by pglenski

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