What is the purpose of a semaphore?

A 'crashed' software needs to be debugged using its core dump. You would start by doing:

Given: int s, l; struct sockaddr_un sock_struct; The following function call: connect(s, &sock_strict, l); fails. Which one is NOT a reason for it to fail?

In a Publish-And-Subscribe implementation, a subscriber must:

In gdb before using 'jump' you would typically do which one of the following:

Which of the following techniques can help keep system programs secure?

Effect of executing the following system call on the file ''test.txt''?

Which IPC message operation is performed to setup communication between arbitrary processes?

Which library routine is used to translate the numeric system call error code to a human readable text error message?

Which shell operator redirects the standard input of the command being executed?

Which option specifies a non standard library path during linking?