[Raion]

From the terminal, cd to the directory you moved it.

tar xvf install.tar

Then you're looking for a "dist" directory. If it has it, as root do:

inst -f dist

If you're not sure you're root, do "whoami" on the command line.

If it doesn't show a dist directory, look for a readme or instructions, or if you see any of the following when you ls after tar xvf:

.spec
.idb
.sw
.man

As the file extensions then you can just type inst as root.

Using the installer software is relatively self-explanatory but if you have any problems there are some documents I can share on it.