sh(1),
have coded several scripts, and have some understanding of TPC/IP
network serices.
It also assumes that you can read the manual page for any other example command.
muxcat?muxcat
downloads a stream of bytes from a specifed service on network peer.
The service is assumed to follow the IETF
RFC
1078 protocol specification.
Typically muxcat is a data-source for a shell pipeline.
The inverse flow is supported by muxsend
(see that HTML document).
The variable$ muxcat $CM ntp-list dallas.npcguild.org bishop.npcguild.org crowe.npcguild.org
CM holds the name of the local
configuration management server, the service name
ntp-list is an arbitrary name assigned to
the local service that returns the list of stratum 2 servers.
Local site policy specifies most of the configuration for these services:
few of the standard "well known services" (e.g.
smtp, nnpt, or
shell) are ever presented as mux services.
Locally assigned names have a specific service for each
installation; due to the lack of credentials required, few
tcpmux services are "standard".
This does not imply the few are useful! I use
many tcpmux services on every host under
my administration. For example
The$ muxcat localhost help dump-usr_msrc dump-var dump-usr dump-slash msrcmux nodelist inrr
dump-filesystem
services provide an archive of each filesystem listed to any client that is
listed in a local DNS
record. The msrcmux service is described in
this HTML document.
The nodelist and inrr
services are local configuration management data sources.
See the
tcpmux
HTML document for a longer
list of npcguild's services.
More to the point: these services form the back-bone of my control loops. The feedback from anonymous data services provide most of the data sources for my automated monitoring.
muxsend and
that HTML document.
$Id: muxcat.html,v 1.1 2012/08/20 20:42:15 ksb Exp $