While I was learning Linux, I partly used this book. Some of issues have been solved, some will never be, but for me it was important to know the other side of

While I was learning Linux, I partly used this book. Some of issues have been solved, some will never be, but for me it was important to know the other side of the medal. I still use linux. (I know that Linux is not, or it was not last time I checked, 100% POSIX)