Top "Posix" questions

Delete all SYSTEM V shared memory and semaphores on UNIX-like systems

How can I delete all not used semaphores and shared memory with a single command on a UNIX-like system, e.…

linux unix posix semaphore shared-memory

What is the Difference Between read() and recv() , and Between send() and write()?

What is the difference between read() and recv(), and between send() and write() in socket programming in terms of performances, …

c sockets unix network-programming posix

Recursive mkdir() system call on Unix

After reading the mkdir(2) man page for the Unix system call with that name, it appears that the call doesn't …

c posix unix mkdir

What does WEXITSTATUS(status) return?

I am trying to understand how WEXITSTATUS(status) works. I have come across a piece of code where the return …

c unix signals posix fork

Kill Thread in Pthread Library

I use pthread_create(&thread1, &attrs, //... , //...); and need if some condition occured need to kill this thread how …

c multithreading pthreads posix

Is there a way to flush a POSIX socket?

Is there a standard call for flushing the transmit side of a POSIX socket all the way through to the …

c sockets posix

How to get the username in C/C++ in Linux?

How can I get the actual "username" without using the environment (getenv, ...) in a program?

c++ c linux posix username

Get POSIX/Unix time in seconds and nanoseconds in Python?

I've been trying to find a way to get the time since 1970-01-01 00:00:00 UTC in seconds and nanoseconds in …

python time posix

Where are all my inodes being used?

How do I find out which directories are responsible for chewing up all my inodes? Ultimately the root directory will …

linux unix posix inode

Suppress echo of command invocation in makefile?

I wrote a program for an assignment which is supposed to print its output to stdout. The assignment spec requires …

linux unix makefile posix