Instead of re-creating your tar archives when you need to add files, why not simply append those files? Jack Wallen shows you how from the command line and a GUI file manager on Linux.

I am running ubuntu 10.04. I am new to linux, and I've gotten most things that I need working, however I am having trouble installing tar.gz files. A .tar.gz is not an installer type, it is just ...

Here are the files that were in the .tar.gz: That last file, "pstoalcx11.sh", is the name they're giving to the driver Linux tells me I need (after supplying it with the ppd).