writes data to $handle. each format character corresponds to one or more arguments.
$ bwrite([$handle], 'format', @array)writes data to $handle. each format character corresponds to one or more array elements.
$handle - an I/O handle to write to (STDOUT is default)
'format' - a string describing the number of values to expect and their types.
$x, ... - an arbitrary piece of data. the pack format describes how many pieces of data to expect and what type to pack them into.
@array - an array full of arbitrary pieces of data used by this function.
$handle = openf(">>/var/log/wtmp"); # fake an entry into the wtmp log... better be root to do this. bwrite($handle, 'Z8 Z8 Z16 I', "tty0", "dritchie", "att.net", ticks() / 1000);