my $path = "/very/long/path/here";
  # or maybe: opendir(my $path, "/very/long/path/here");

move($abc1,"$path/compleat/");

 foreach my $file (<$path/MHSAPC/*csv>){chomp; ... ## read also about glob

##</code><code>##

$mmtime = (stat($file))[9]; 
if ($mmtime > 600){do something ....} ; 
    ## note that these are seconds, 10 min = 600 sec 

##</code><code>##

if ($abc1 eq "")
{
next;
}