It used to be said [...] that AIX looks like one space alien discovered Unix, and described it to another different space alien who then implemented AIX. But their universal translators were broken and they'd had to gesture a lot.
Paul Tomblin
Handy Commands Page listing virtually every commonly used command under AIX Unix, Click on one of the links below to jump directly to one of the sections.
All of these documents were originally text documents, and a zip can be downloaded of all of the original files (so you can, for example, read them on your unix machine) can be found here. These are not being actively maintained though.
AIX UNIX