Ubuntu Manpage: mqtt-simple - Very simple MQTT implementation

Provided by: libnet-mqtt-simple-perl_1.29-2_all

NAME

       mqtt-simple - Very simple MQTT implementation

SYNOPSIS

        mqtt-simple -h mqtt.example.org -c -s "sensors/#" -s "debug/#" -s "#"

        mqtt-simple -h mqtt.example.org -p "example/unretained" -m "message"

        mqtt-simple -h mqtt.example.org -r -p "example/retained" -m "message"

        tail -f logfile | mqtt-simple -h mqtt.example.org -p "log/example"

        mqtt-simple --ssl --insecure ...

        mqtt-simple --ssl --ca ca.crt --cert client.crt --key client.key

DESCRIPTION

       This is just a simple utility program. It doesn't do much. Specifically, all the QoS features are
       unsupported. Also, don't expect fancy error messages and such :-)

COMMAND LINE OPTIONS

-h --host MQTT server to connect to, required.

-p --publish topic Publish a message. Uses the message given with "-m", or will read lines from
stdin, and publish a message for each given line.

-m --message message Message to publish. Requires "-p".

-r --retain Causes messages published with "-p" to have the "retain" flag on.

-s --subscribe filter Subscribe to the given topic filter. Use the standard MQTT wildcards like "+"
and "#". Outputs matching published messages on stdout. Can be given multiple
times.

-e --except filter Suppress published messages that match filter. Can be given multiple times.

--count number Quit after receiving number messages.

--message-only Output only the message values, without the topics.

-1 --one Shortcut for "--count 1 --message-only".

--color
--no-color For each given "-s", print the matching topic in a different color. Note that
the first matching topic will be used for color selection, so specify the topics
with the most specific one first, the least specific one (like "#") last.

Color is enabled by default if stdout is a terminal.

--raw Pass ASCII control characters unaltered. By default, they're replaced by "^@"
notation or, when "--color" is enabled, reverse video characters. For example,
an ASCII newline would be displayed as "^J" unless "--raw" is used.

-d --datetime format Prefix messages with a timestamp. Optionally, a format for "strftime" can be
supplied.

-u --user --username username
Specify a username. Overrides the environment variable "MQTT_SIMPLE_USERNAME".

--pass --password password
Specify a password. Overrides the environment variable "MQTT_SIMPLE_PASSWORD".

SSL options
--ssl Use SSL instead of unencrypted connection.

--insecure Disable SSL certificate validation and enable clear text passwords. Useful for
testing, bad idea in production.

Overrides the environment variables "MQTT_SIMPLE_SSL_INSECURE" and
"MQTT_SIMPLE_ALLOW_INSECURE_LOGIN".

--ca path The Certificate Authority to validate against. path can be a file or a
directory. If unspecified, IO::Socket::SSL attempts to use the system wide CA
configuration.

Overrides the environment variable "MQTT_SIMPLE_SSL_CA".

--cert path
--key path A client certificate with its key.

Override the environment variables "MQTT_SIMPLE_SSL_CERT" and
"MQTT_SIMPLE_SSL_KEY".

LICENSE

       Pick your favourite OSI approved license :)

       http://www.opensource.org/licenses/alphabetical

AUTHOR