Well..none of the shell scripts I found are worth a shit, so I made my own in a language I know...you need php-cli installed...instructions in the source: 

[url=http://files.p455w0rd.net/UTCacheCleaner][img:0679ab375d]http://files.p455w0rd.net/UTCacheCleaner.png[/img:0679ab375d][/url]

http://files.p455w0rd.net/UTCacheCleaner