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TLDR; sudo tail -f /var/log/ufw.log The following applies to an Ubuntu server. The log files are usually in /var/log, list them with: sudo ls -l /var/log/ufw* It should return a list of log files like the following. The oldest ones are compressed: -rw-r----- 1 syslog adm 1383548 May 18 12:42 /var/log/ufw.log -rw-r----- 1 syslog adm 6492572 May 17 06:24 /var/log/ufw.log.1 -rw-r----- 1 syslog adm 1270159 May 11 06:24 /var/log/ufw.log.2.gz -rw-r----- 1 syslog adm 1459552 May 3 06:25 /var/log/ufw....

The Brew install did not work for me, so here is how to install the Graphviz backend with MacPorts. Install XCode. The complete AppStore version is not necessary: you can simply install the command line tools with xcode-select —install and click on ‘Install’ in the window that opens (if it is not already installed). Install MacPorts. There is a pkg installer for Catalina. In a new terminal, run sudo port -v selfupdate and then sudo port install graphviz If MacPorts returns with errors, you might have to fix some ports: sudo port -f activate xorg-xorgproto sudo port -f activate xorg-libX11 sudo port select --set python python38 If you use the Python API for Graphviz, you can run pip install graphviz in your dedicated environment, and import graphviz in your code....