обясните плиз почему uptime и /proc/uptime не совпадают
# cat up.pl #!/usr/bin/perl open (F ,"/proc/uptime") or die " error $!\n"; my @mas = <F>; close (F); my $uptime = (split(/[\s]+/,"@mas"))[0]/3600; print "uptime = $uptime\n";
./up.pl uptime = 8.65871388888889
#uptime 17:28:38 up 8:39, 2 users, load average: 0.00, 0.03, 0.02
почему такая разница ?