It's possible, but it's a real hack, involving @ARGV and the magic <> construct. (I won't tell you how to do it because if you're not clever enough to find it with those hints, you're not clever enough to know not to use it.) You're really better off simply using a loop. The correct way to code that loop would probably be like this:

my @lines;
foreach my $file(@files) {
    open(IN, "< $file") or die "Can't open $file: $!";
    push @lines, <IN>;
    close IN;
}
# Now do whatever you want with @lines
[download]

Alternatively, remove all references to @lines and replace the push line with:

    while(my $line = <IN>) {
        #Do whatever processing you want with $line
    }
[download]

Hope this helps,

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