On 1/20/2023 1:05 PM, Alexander Kapshuk wrote: > Is this,https://pubs.opengroup.org/onlinepubs/9699919799/, what > you're looking for? I'm looking for a book like 1* [1] https://archive.org/details/posix1standardpr0000zlot/mode/2up But I don't know if it contains the explanations of POSIX.1b ? Thanks for your help. -- Thanks, Axel M.