syswrite(FILEHANDLE,SCALAR,LENGTH,OFFSET)
syswrite(FILEHANDLE,SCALAR,LENGTH)
Attempts to write LENGTH bytes of data from variable
SCALAR to the specified FILEHANDLE, using the system
call write(2). It bypasses stdio, so mixing this
with prints may cause confusion. Returns the number
of bytes actually written, or undef if there was an
error. An OFFSET may be specified to place the read
data at some other place than the beginning of the
string.