added some help

[spider.git] / cmd / show / call.pl

diff --git a/cmd/show/call.pl b/cmd/show/call.pl
index 92a99234c2819f227f5cfc4a7ad5ddd84fe3d9e6..d230b626ad1c6823bfa2e718e2fc5617f61199c6 100644 (file)
--- a/cmd/show/call.pl
+++ b/cmd/show/call.pl
@@ -10,6 +10,8 @@ my @list = split /\s+/, $line;                      # generate a list of callsigns
 my $l;
 my @out;
 
+return (1, "SHOW/CALL <callsign>, e.g. SH/CALL g1tlh") unless @list;
+
 use Net::Telnet;
 
 my $t = new Net::Telnet;