you don't need install, it's a perl script.
now Uniscan is in version 3.0.


root@bt:~/Desktop# perl uniscan.pl
###############################
# Uniscan project #
#...

Uniscan 2.0 is a perl vulnerability scanner for RFI, LFI, RCE, XSS and SQL-injection.

Project url: http://sourceforge.net/p/uniscan


[]'s