Author: Anonymous

It is possible for a call to waitpid(-1, &chldstat, WNOHANG) to block and wait indefinitely.

What is wrong with the following code snippet? Assume calls to fork() and execlp() are successful.  

When a write to a pipe exceeds PIPE_BUF number of bytes, this action may be non-atomic, and thus produce unexpected and undesirable results. This is primary purpose behind which we aim to conduct all pipe I/O operations using sizes less-than-or-equal-to PIPE_BUF quantity bytes. 

A zombie process consumes resources belonging to its parent (i.e., a memory leak in the parent process is introduced by the creation of zombies).

Will the following awk script correctly compute the average median values of all records? Assume each input record to be sorted in ascending order.   Example input data:   Example output data:

waitpid() is capable of waiting on children without actually requiring knowledge of their PIDs.

It is considered invalid or erroneous to lseek() to a position beyond the end of a file, then attempt to write to this location.

Assume a parent process both (a) has not yet terminated, and (b) will never perform a “wait” on any of its child processes. When a child process terminates and becomes a zombie, it will be adopted immediately by the init system process.

Which congenital lung lesion has no connection to the tracheobronchial tree?

Which organism is most common in late-onset sepsis in VLBW infants?