First of all this cannot be your exact code because it doesn't even compile.That aside:

$logFile is a file handle. when it is interoplated into a string it will become something like "GLOB(0x810388c)". What you need to do is either: make $logFile contain the name of the file to which you wish output to be directed, or execute the command using backticks (`command >> logfile`) and capture the return value and print it to your filehandle.

my $output = `command`;
print $logFile $output;

# or 

my $logFile = "path/to/loge/file";

system("command >> $logFile");
[download]

Does that make sense?