In today’s computer environments, mostly UNIX servers and workstations, it is very essencial that the system administrator have the basic knowledge of different operating systems. This ook is written for Sun Solaris administrator who want to transfer their knowledge of Solaris UNIX skills to the AIX 5L operating systemhis redbook will basically compare system administration tasks in Solaris 8 to AIX 5L Version 5.1. This redbook shows the reader similarities and differences between each operating system. This redbook will also introduce Solaris administrators to IBM pSeries architecture. It is assumed that the reader of this redbook already has Solaris 8 system administration skills, and are familiar with Sun hardware.