cleaner lock file checking, don't use 'ps'

trunk/ripnews/ripnews.rb

@@ -1,6 +1,6 @@
 #!/usr/local/bin/ruby -w
 
-# $Dwarf: ripnews.rb,v 1.90 2005/01/30 14:47:00 ward Exp $
+# $Dwarf: ripnews.rb,v 1.91 2005/01/30 18:43:17 ward Exp $
 # $Source$
 
 #
@@ -315,15 +315,15 @@ def lock
 	if @config[group].has_key?("LOCKFILE")
 		if FileTest.exists?(@config[group]["LOCKFILE"])
 			lock = File.open(@config[group]["LOCKFILE"],  "r")
-			line = lock.gets
+			pid = lock.gets
 			lock.close
-			if line
-				line.chomp!
-				psauxw = `ps auxw`
-				if /^\S+\s+#{line}\s+/.match(psauxw)
+			if pid
+				pid.chomp!
+				begin
+					Process.kill(0, pid)
 					print "Already running, exiting...\n"
 					exit
-				else
+				rescue Errno::ESRCH
 					print "Stale lock found... removing...\n"
 					File.unlink(@config[group]["LOCKFILE"])
 				end