YUI compressor - compress multiple input files into one output file

Question

Possible duplicate:
How can I combine and compress multiple script and css files for use in production?

I would like to compress multiple javascript files into one thumbnail file. I am using YUI Compressor . Their page says that he can do it like this (their example uses css files, but I replaced it with js):

java -jar yuicompressor.jar -o '.js$:-min.js' *.js 

When I try to do this, I get an empty file named .js$

What am I missing?

Answer 1

The following works for me: java -jar yuicompressor.jar *.js > combined.js