pi@raspberrypi:/ $ mosquitto_sub -v -t "gateway/+/rx"
但是导致了：
-bash: mosquitto_sub: command not found
即使是mosquitto正在运行：
pi@raspberrypi:/ $ sudo service mosquitto status
● mosquitto.service - LSB: mosquitto MQTT v3.1 message broker
Loaded: loaded (/etc/init.d/mosquitto; generated; vendor preset: enabled)
Active: active (running) since Sun 2018-09-30 21:43:51 UTC; 5h 14min ago
Docs: man:systemd-sysv-generator(8)
Process: 347 ExecStart=/etc/init.d/mosquitto start (code=exited, status=0/SUCCESS)
CGroup: /system.slice/mosquitto.service
└─432 /usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf
搜索问题并没有容易找到答案。
#1 楼
解决方案是也安装mosquitto-clients。pi@raspberrypi:/ $ apt-get install mosquitto-clients
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
libc-ares2 libmosquitto1
The following NEW packages will be installed:
libc-ares2 libmosquitto1 mosquitto-clients
0 upgraded, 3 newly installed, 0 to remove and 0 not upgraded.
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现在
mosquitto_sub命令可用。