posix

Is this post historically accurate. I always thought sh shell is Bourne shell for the command line at the terminal. Or is it correct to call it Almquist shell. Maybe the original poster is here in the forums. https://www.reddit.com/r/freebsd/s/KeEnSa4mU5

Ok now so here's a question for you: I'm trying to find out how much of a problem it will be to traverse a directory hierarchy with opendir and readdir with multiple threads. What I have gathered is this: that opendir is thread safe, readdir only on different streams. So what I don't...

I'm doing research on old libraries for Unix-like systems, and am specifically interested (at the moment anyways ^^') in the evolution of POSIX threads on Linux in the early 2000s. I've discovered that the compiled object files for the "Next Generation POSIX Threads" library lives on the old...

In many C programs, I have the need to convert an errno into a printable string. Since strerror is not thread-safe and perror only works with stderr, I resort to using strerror_r, see strerror_r. However, there are two different definitions of this function: int strerror_r(int errnum, char...

Hello EveryOne???, currently am exploring the default Command Lines of FreeBSD 14.0-RELEASE-p2 From POSIX XCU standard, there is 160 commands Reference : https://en.wikipedia.org/wiki/List_of_POSIX_commands https://pubs.opengroup.org/onlinepubs/9699919799/idx/utilities.html...

Does FreeBSD provide man pages for POSIX? In Debian and Ubuntu, I usually install the "manpages-posix" and "manpages-posix-dev" packages to get POSIX man pages. Is there something similar for FreeBSD?

1- What would be the best way to learn posix with focus on BSD's, shell and Perl? 2- Is there another language for sysadmins besides shell and Perl? 3- What is the best way to navigate the FreeBSD source code? 4- What are the languages most used in FreeBSD development? PS.: I'm not a developer...

Hey everyone! I have a Mail Server Jail that uses dovecot, postfix and maia (security/maia); dovecot and postfix start automatically when the jail starts or restarts; it's maiad that does not. I have to manually do: # service maiad start (and then it loads fine and my mail server...

I am trying to learn more about NFSv4 ACLs and their mapping to POSIX ACLs. I was surprised to find that when I issue a chmod on a file with a 7 (e.g. chmod 755 or chmod 777) the resulting NFSv4 ACL does not have the Dd flags set. This is confusing to me, because I am able to delete the file...

For a service that can optionally listen on a local (Unix) socket, I want to implement detection of a "stale" socket, so it can startup without user intervention in this case by just unlinking the stale socket. As my service is designed around an event loop using pselect, I put all sockets into...

I'm trying to remove any implementation specific (GNU Make) details from my Makefiles but having a hard time fixing some issues. The structure of my projects is like so; myapp/ Makefile src/ foo/ foo1.c foo2.c bar/ bar1.c obj/ 1) The mere presence of an...