my $stop = `/usr/local/bin/sudo /usr/local/www/cgi-bin/ntop/ntop.sh stop` or die "cannot stop ntop: $!";

##</code><code>##

<br>
my $start = `/usr/local/bin/sudo /usr/local/www/cgi-bin/ntop/ntop.sh start`
or die "cannot start ntop: $!";

##</code><code>##

Software error:
cannot stop ntop:  at /usr/local/www/cgi-bin/ntop/ntop.cgi line 41.