It is not possible to set the sticky bit of a file when creating it. Therefore it is necessary to create the directory and then set the sticky bit by executing: mkdir(“/tmp/dir”, 0744); chmod(“/tmp/dir”, 07744). Why?

Recently your office's UNIX tool-chain was updated. Now, code that previously used to build and run still builds without any warnings or errors but displays load-time errors due to symbols not found in shlibs. You have ensured that all necessary shared libraries are present in the path 'pointed to' by the appropriate environment variable. Which is true?

What does this code do: BOOL sharedLockSuccess = NO; NSLock *aMutex; : sharedLockSuccess = [aMutex lockWhenCondition:1 beforeDate:[NSDate dateWithTimeIntervalSinceNow:(NSTimeInterval)3600]]; :

Which system call can be used to send a message via a connected socket?

Which are true of Unix system calls?

Which gdb command can be used to obtain the stack trace of all the threads of a multi threaded program running on Linux?

What does the command 'mknod temp p' do?

Which utility is used to search out regular expressions in the input?

If a process has locked a System V Semaphore and receives a SIGKILL signal, which one is true?

How to debug the process '123' and program 'test' on a Linux system?

Which utility is used to generate a core file of a process on Linux?