Minify JavaScript File using YUI Compressor; yui-compressor

To minify JavaScript using the YUI Compressor, do the following: Install YUI Compressor:

sudo apt-get install yui-compressor

Compress the script:

java -jar /usr/share/yui-compressor/yui-compressor.jar --type js -v
myscript.js -o myscript.min.js

Your minified script file we be saved to myscript.min.js