Mon 28 Oct 2019

Using top on macOS

In the afternoon I noticed that my Mac mini 2014 running macOS Mojave was running slow. Even typing was sluggish. So I typed the following in an open terminal:

top -u

to find the culprit, which turned out to be Thunderbird, using 67% CPU.

Note that top -u is an alias for

top -o cpu -O time

meaning it sorts first on the CPU column, and on the time column next.

Let's Encrypt

In the evening I installed a new operating system image on the virtual private server (VPS) that hosts Plurrrr. It was originally running on an old CentOS installation but this time I decided to use Ubuntu.

The main reason for the update was to switch to HTTPS for Plurrrr, which turned out easier than I expected thanks to Certbot.