Web Reference: poll () to monitor the file descriptors, printing the number of ready file descriptors on return. For each ready file descriptor, the program: • displays the returned revents field in a human-readable form; • if the file descriptor is readable, reads some data from it, and displays that data on standard output; and A list of Linux Sysadmin/DevOPs questions and answers based on the Interview Questions compiled by https://github.com/chassing/linux-sysadmin-interview-questions, intended to assist current and future Sysadmins/DevOPs in learning the craft. The Linux ppoll () system call modifies its tmo_p argument. However, the glibc wrapper function hides this behavior by using a local variable for the timeout argument that is passed to the system call.
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