IRIXinst is the installation software distributed by Silicon Graphics to install, upgrade or remove IRIX, a UNIX based computer operating system for SGI workstation used to processes high end graphics for visual simulations, scientific applications, and 3D animation. Some computer programs are executed by copying and storing them into a folder. Other programs, however, are not suitable for immediate execution and require an installation procedure. The installer contains the specific programs to install and run the required operating system following a set of operations. Initial installation procedures include verification of system requirements and existing versions of the software, and the updating of program files and folders. After performing pre-installation checks, the configuration data are added, automatically run components are configured, and execution commands are done to activate the program. The most common form of installation requires a user who specifies installation location, supplies passwords, and accepts or declines the end-user license agreement (EULA).