$logfile = "C:\\somepath\\somefile";
open (LOGFILE, "$logfile) || die "Can't open $logfile: $!";
do something with the file
close (LOGFILE);

##</code><code>##

$cmd = "G:\\somepath\\bin\\vfxolog -U vsifax";
$return = `$cmd` or die "Can't execute $cmd: $!";

##</code><code>##

$cmd = "G:\\somepath\\bin\\vfxolog -U vsifax";
system ( $cmd ) || die "Can't execute $cmd: $!";