multiplex uni-/bidirectional streams onto stdin/stdout
The ut utility performs multiplexing of upto 254 uni- (in or out) or bidirectional channels onto its stdin/stdout pair of file descriptors.
The multiplexing is done by using special prefixes on the main (stdin/stdout) channel, in order to identify the client channels, the command channel and the debug/message channel. Input on the main channel is strictly line based, i.e., content extends from the end of the prefix to, and including, the end-of-line (\n). For the output on the main channel, this is mostly the same, except that a special prefix type exists, which signals that the end-of-line has to be discarded.
ut is not meant to be used as a standalone tool, but mainly for use by other (ut aware) programs, which too perform the prefix based mux/demux scheme.
Holger Rasch firstname.lastname@example.org
Copyright (c) 2009, 2010 bytemine GmbH email@example.com
Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.