Modern Linux distros provide POSIX Programmer’s Manual in manpages, sections
,
, and
. You can check if it works on your machine:
123 | man 0p stdio.h
man 1p exit
man 3p open
|
You can consult the POSIX documentation while coding on a beach or in an airplane, without Internet connection. It is always on your fingertips.
People seldom use the command
on Linux machines nowadays. We are accustomed to an equivalent command
,
that for eons was slightly more convenient.
There is a reason, though, to use command
much more often. Especially when we want to figure out something less routine and less obvious.