force arguments

ytools/y2tool/analyze_logs

@@ -115,11 +115,17 @@ end
 logger = "/dev/null"
 output = nil
 
-OptionParser.new do |opts|
-  opts.banner = "Usage: analyze_logs [options] [paths...]\nDefaults: analyze_logs ." + File::SEPARATOR
+parser = OptionParser.new do |opts|
+  opts.banner = "Usage: analyze_logs [options] path [other paths...]\nDefaults: analyze_logs <path>"
   opts.on("-l", "--log LOG", "File to which log") { |o| logger = o }
   opts.on("-o", "--output OUTPUT", "File to which YAML will be written.") { |o| output = o }
-end.parse!
+end
+parser.parse!
+
+if ARGV.empty?
+  STDERR.puts parser.help
+  exit 1
+end
 
 @log = Logger.new(logger)
 
@@ -128,9 +134,6 @@ def log
 end
 
 ARGV.each { |f| single_file(result, f) }
-if ARGV.empty?
-  single_file(result, ".")
-end
 
 final = result.to_yaml
 if output