tcflush#
Discard buffered input, output, or both on terminal $fd.
Synopsis#
use POSIX qw(tcflush TCIFLUSH TCOFLUSH TCIOFLUSH);
tcflush($fd, TCIOFLUSH); # drop pending input and output
What you get back#
"0 but true" on success, undef on failure. Negative
$queue_selector sets $! to EINVAL.
Differences from upstream#
Fully compatible with upstream POSIX.