MQTT doesn't seem to be happy of late

[Trying_to_learn]

Silly me.

I said before I edited the mosquitto.log file.

Seems I didn't.

sudo nano mosquitto.log

Though it mentioned the file had been written to while I was editing it: "Do you want to write to file" and I said YES.....

It wasn't done.

So I tried:

pi@TimePi:/var/log/mosquitto $ sudo echo "********** 2019 01 06 09:33" >> mosquitto.log
-bash: mosquitto.log: Permission denied

Not a big deal, but why doesn't that work?
Just so I have a "from here" point in the file.