From 583bcdfcb6b2280220f4cfeeb5bc829ecf3ccdfc Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Mon, 20 Mar 2017 16:31:00 +0100
Subject: [PATCH] check if card alias exists

---
 supermicro-kvm.pl | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/supermicro-kvm.pl b/supermicro-kvm.pl
index afe0523..91ea8a6 100755
--- a/supermicro-kvm.pl
+++ b/supermicro-kvm.pl
@@ -48,11 +48,9 @@ sub read_inifile {
 
 my %Config = read_inifile("$ENV{HOME}/.rsbs2rc");
 
-my $hostalias;
+my $hostalias = $ARGV[0];
 
-if (defined($ARGV[0])) {
-	$hostalias = $ARGV[0];
-} else {
+if (!defined($hostalias) || !defined($Config{$hostalias})) {
 	print STDERR "Usage: $0 card-alias\n\n";
 	print STDERR "card-alias\tone of: ";
 	foreach my $alias (keys(%Config)) {
-- 
2.39.5