#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11111868
use warnings;
use Time::HiRes qw( time sleep );

my $fudgefactor = 0.01;

while(1)
  {
  my $nextsecond = int time + 1;
  sleep $nextsecond - time - $fudgefactor;
  1 while time < $nextsecond;
  printf "%.6f\n", time;
  }

##</code><code>##

1579972033.000003
1579972034.000004
1579972035.000004
1579972036.000004
1579972037.000004
1579972038.000005
1579972039.000003
1579972040.000004
1579972041.000004
1579972042.000003
1579972043.000003
1579972044.000004
1579972045.000003
1579972046.000005
1579972047.000003