AIX is UNIX.
In the long historical evolution of UNIX, UNIX is no longer the name of a specific operating system. Basically, any system authorized by UNIX can be used. It is called UNIX, whether it is AIX, Solaris, HP-UX, etc.
The UNIX trademark is currently in the hands of SCO
Learn UNIX well, and you can quickly get started with other UNIX systems. , all you need is to quickly master the unique tool environment of each UNIX
In addition, more than 80% of the tools in all UNIX have common configurations
Currently mainstream Classification of Unix
SCO UnixWare
IBM AIX
HP HP-UX
SUN Solaris
SGI IRIX (Already in decline)