To suppress output of the command, use the capture method from IPC::System::Simple. The capture command replaces the backticks. For example:

#!/usr/bin/perl

use strict;
use warnings;
use IPC::System::Simple qw(capture);

my @output = capture("ls", "/root/Desktop");
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The output's there just not printed to output. To retrieve the results:

#!/usr/bin/perl

use strict;
use warnings;
use IPC::System::Simple qw(capture);

my @output = capture("ls", "/root/Desktop");
print @output, "\n";
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