Install #mosquitto on mac using #homebrew and related commands

$ brew install mosquitto

==> Installing dependencies for mosquitto: c-ares, openssl, libwebsockets

==> Installing mosquitto dependency: c-ares

==> Downloading https://homebrew.bintray.com/bottles/c-ares-1.10.0.yosemite.bottle.tar.gz

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==> Pouring c-ares-1.10.0.yosemite.bottle.tar.gz

🍺  /usr/local/Cellar/c-ares/1.10.0: 57 files, 540K

==> Installing mosquitto dependency: openssl

==> Downloading https://homebrew.bintray.com/bottles/openssl-1.0.2c.yosemite.bottle.tar.gz

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==> Pouring openssl-1.0.2c.yosemite.bottle.tar.gz

==> Caveats

A CA file has been bootstrapped using certificates from the system

keychain. To add additional certificates, place .pem files in

  /usr/local/etc/openssl/certs

and run

  /usr/local/opt/openssl/bin/c_rehash

This formula is keg-only, which means it was not symlinked into /usr/local.

OS X already provides this software and installing another version in

parallel can cause all kinds of trouble.

Apple has deprecated use of OpenSSL in favor of its own TLS and crypto libraries

Generally there are no consequences of this for you. If you build your

own software and it requires this formula, you'll need to add to your

build variables:

    LDFLAGS:  -L/usr/local/opt/openssl/lib

    CPPFLAGS: -I/usr/local/opt/openssl/include

==> Summary

🍺  /usr/local/Cellar/openssl/1.0.2c: 463 files, 18M

==> Installing mosquitto dependency: libwebsockets

==> Downloading https://homebrew.bintray.com/bottles/libwebsockets-1.4.yosemite.bottle.tar.gz

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==> Pouring libwebsockets-1.4.yosemite.bottle.tar.gz

🍺  /usr/local/Cellar/libwebsockets/1.4: 23 files, 3.3M

==> Installing mosquitto

==> Downloading https://homebrew.bintray.com/bottles/mosquitto-1.4.2.yosemite.bottle.tar.gz

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==> Pouring mosquitto-1.4.2.yosemite.bottle.tar.gz

==> Caveats

mosquitto has been installed with a default configuration file.

You can make changes to the configuration by editing:

    /usr/local/etc/mosquitto/mosquitto.conf

To have launchd start mosquitto at login:

    ln -sfv /usr/local/opt/mosquitto/*.plist ~/Library/LaunchAgents

Then to load mosquitto now:

    launchctl load ~/Library/LaunchAgents/homebrew.mxcl.mosquitto.plist

Or, if you don't want/need launchctl, you can just run:

    mosquitto -c /usr/local/etc/mosquitto/mosquitto.conf

==> Summary

🍺  /usr/local/Cellar/mosquitto/1.4.2: 28 files, 700K


To run Mosquitto:

/usr/local/sbin/mosquitto -c /usr/local/etc/mosquitto/mosquitto.conf


Installing mosquitto on ubuntu
sudo apt-get install mosquitto

In another tab Subscribe , with verbose and debug mode

mosquitto_sub -v -d -h localhost -t sandeep

In another tab Pusblish

mosquitto_pub -d -h localhost -t sandeep -m "Up and Running"

You will see subscribe received message

Up and Running

Running mosquitto process on port 1883

ps -ef | grep mosq && netstat -tln | grep 1883

client id -  default name.hostname

mosquitto_sub [-1] [-A bind_address] [-c] [-d] [-h hostname] [-i client_id] [-I client id prefix] [-k keepalive time] [-p port number] [-q message QoS] [-R] [-S] [-N] [--quiet] [-v] [ [-u username] [-P password] ] [ --will-topic topic [--will-payload payload] [--will-qos qos] [--will-retain] ] [[ { --cafile file | --capath dir } [--certfile] [--key file] [--tls-version version] [--insecure] ] | [ --psk hex-key --psk-identity identity [--tls-version version] ]] [-T filter-out...] -t message-topic...

mosquitto_pub [-A bind_address] [-d] [-h hostname] [-i client_id] [-I client id prefix] [-p port number] [-q message QoS] [--quiet] [-r] [-S] { -f file | -l | -m message | -n | -s } [ [-u username] [-P password] ] [ --will-topic topic [--will-payload payload] [--will-qos qos] [--will-retain] ] [[ { --cafile file | --capath dir } [--cert file] [--key file] [--ciphers ciphers] [--tls-version version] [--insecure] ] | [ --psk hex-key --psk-identity identity [--ciphers ciphers] [--tls-version version] ]] -tmessage-topic

mosquitto_pub [--help]