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ips-qos 1.10.5-6 (Default branch)
04-26-2008
ips-qos is a flexible firewall and traffic shapingtool. It works on Fedora Core, CentOS, Debian,Ubuntu, Slackware, Mandriva, PLD, and SUSE. It wasintended to give administrators more control overa shared Internet connection. It includes ips, aflexible and easy-to-use configurable firewallwith the ability to control access to the Internet(or selected services) from a LAN. It alsoincludes qos, a traffic shaping tool that measuresand controls the traffic load for every computerin a LAN.License: SharewareChanges:|
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mosquitto_pub(1) mosquitto_pub(1) NAME
mosquitto_pub - an mqtt version 3.1 client for publishing simple messages SYNOPSIS
mosquitto_pub [-d] [-h hostname] [-i client_id] [-I client id prefix] [-p port number] [-q message QoS] [--quiet] [-r] { -f file | -l | -m message | -n | -s} [ -u username [-P password] ] [ --will-topic topic [--will-payload payload] [--will-qos qos] [--will- retain] ] -t message-topic DESCRIPTION
mosquitto_pub is a simple mqtt version 3.1 client that will publish a single message on a topic and exit. OPTIONS
-d, --debug Enable debug messages. -f, --file Send the contents of a file as the message. -h, --host Specify the host to connect to. Defaults to localhost. -i, --id The id to use for this client. If not given, defaults to mosquitto_pub_ appended with the process id of the client. Cannot be used at the same time as the --id-prefix argument. -I, --id-prefix Provide a prefix that the client id will be built from by appending the process id of the client. This is useful where the broker is using the clientid_prefixes option. Cannot be used at the same time as the --id argument. -l, --stdin-line Send messages read from stdin, splitting separate lines into separate messages. Note that blank lines won't be sent. -m, --message Send a single message from the command line. -n, --null-message Send a null (zero length) message. -p, --port Connect to the port specified instead of the default 1883. -P, --pw Provide a password to be used for authenticating with the broker. Using this argument without also specifying a username is invalid. This requires a broker that supports MQTT v3.1. See also the --username option. -q, --qos Specify the quality of service to use for the message, from 0, 1 and 2. Defaults to 0. --quiet If this argument is given, no runtime errors will be printed. This excludes any error messages given in case of invalid user input (e.g. using --port without a port). -r, --retain If retain is given, the message will be retained as a "last know good" value on the broker. See mqtt(7) for more information. -s, --stdin-file Send a message read from stdin, sending the entire content as a single message. -t, --topic The mqtt topic on which to publish the message. See mqtt(7) for more information on mqtt topics. -u, --username Provide a username to be used for authenticating with the broker. This requires a broker that supports MQTT v3.1. See also the --pw argument. --will-payload Specify a message that will be stored by the broker and sent out if this client disconnects unexpectedly. This must be used in con- junction with --will-topic. --will-qos The QoS to use for the Will. Defaults to 0. This must be used in conjunction with --will-topic. --will-retain If given, if the client disconnects unexpectedly the message sent out will be treated as a retained message. This must be used in conjunction with --will-topic. --will-topic The topic on which to send a Will, in the event that the client disconnects unexpectedly. WILLS
mosquitto_sub can register a message with the broker that will be sent out if it disconnects unexpectedly. See mqtt(7) for more informa- tion. The minimum requirement for this is to use --will-topic to specify which topic the will should be sent out on. This will result in a non- retained, zero length message with QoS 0. Use the --will-retain, --will-payload and --will-qos arguments to modify the other will parameters. EXAMPLES
Publish temperature information to localhost with QoS 1: o mosquitto_pub -t sensors/temperature -m 32 -q 1 Publish timestamp and temperature information to a remote host on a non-standard port and QoS 0: o mosquitto_pub -h 192.168.1.1 -p 1885 -t sensors/temperature -m "1266193804 32" Publish light switch status. Message is set to retained because there may be a long period of time between light switch events: o mosquitto_pub -r -t switches/kitchen_lights/status -m "on" Send the contents of a file in two ways: o mosquitto_pub -t my/topic -f ./data o mosquitto_pub -t my/topic -s < ./data Send parsed electricity usage data from a Current Cost meter, reading from stdin with one line/reading as one message: o read_cc128.pl | mosquitto_pub -t sensors/cc128 -l BUGS
mosquitto_pub bug information can be found at http://launchpad.net/mosquitto SEE ALSO
mqtt(7) mosquitto_sub(1) mosquitto(8) libmosquitto(3) AUTHOR
Roger Light <roger@atchoo.org> 5 February 2012 mosquitto_pub(1)