my $offline = 1 if (-s 'online.flg' gt 0);

##</code><code>##

my $flag_size = -s 'online.flg';
my $offline = 1 if ($flag_size > 0); 

##</code><code>##

my $flag_size = -s 'online.flg';
my $zero_value = 0;
my $offline = 1 if ($flag_size > $zero_value);

##</code><code>##

my $zero_value = 0;
my $flag_size  = -s 'online.flg';
my $offline = 0;
if($flag_size > $zero_value){
  $offline = 1;
}

##</code><code>##

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