How to install Jena tools system-wise

[Laura Morales]

As per title, I'd like to have the Jena tools in my PATH, but I don't know how. 
I mean the tools in "jena/bin/". I tried to copy "jena/bin/*" into "bin/" but 
they're not binaries, they are scripts that need some library that I think is 
available only in my "jena/" directory.