Linux Man Page Viewer
The following form allows you to view linux man pages.
#define _GNU_SOURCE /* See feature_test_macros(7) */
The fcloseall() function closes all of the calling process's open
streams. Buffered output for each stream is written before it is
closed (as for fflush(3)); buffered input is discarded.
The standard streams, stdin, stdout, and stderr are also closed.
This function returns 0 if all files were successfully closed; on
error, EOF is returned.
Multithreading (see pthreads(7))
The fcloseall() function does not lock the streams, so it is not
This function is a GNU extension.
close(2), fclose(3), fflush(3), fopen(3), setbuf(3)
GNU 2013-06-21 FCLOSEALL(3)