foreach (@mergedlogs)
{
  open FH, ">>mergedlogs.txt" or die "can't open mergedlogs.txt: $!";
  print FH "$_\n";
  close FH
}
##</code><code>##

open FH, ">>mergedlogs.txt" or die "can't open mergedlogs.txt: $!";
$| = 0; # just in case
foreach (@mergedlogs)
{
  print FH "$_\n";
}
close FH;