don't save files without command (prompt only)

diff --git a/dell-switch.pl b/dell-switch.pl
index 5b9109c..a4fc2bb 100755 (executable)
--- a/dell-switch.pl
+++ b/dell-switch.pl
@@ -44,6 +44,8 @@ chdir 'log';
 
 sub save_log {
        my ($ip, $hostname, $command, $buff) = @_;
+
+       return unless $command;
        
        my $file = "${ip}_${hostname}_${command}.log";
        open my $log, '>', $file;