bsd man page for flush

FLUSH(3F)																 FLUSH(3F)

NAME
       flush - flush output to a logical unit

SYNOPSIS
       subroutine flush (lunit)

DESCRIPTION
       Flush causes the contents of the buffer for logical unit lunit to be flushed to the associated file.  This is most useful for logical units
       0 and 6 when they are both associated with the control terminal.

FILES
       /usr/lib/libI77.a

SEE ALSO
       fclose(3S)

4.2 Berkeley Distribution					   May 15, 1985 							 FLUSH(3F)