The default PDF-reader in Ubuntu 16.04 is very plain and non-configurable, but it is easy to replace it with a better alternative, such as qpdfview, which is much more configurable.
I always add these GNOME extensions to fix a few annoying quirks in Ubuntu Gnome (20.04), they should be included by default in Ubuntu, in my opinion. Arc Menu requires gnome-tweaks:
Here are my notes on copying the content of an old storage hard drive over to a new. The label of the old hard drive is "archive" and the label of the new hard drive is "archive_2017". It is assumed that your old hard drive will be mounted at "/archive".
Since you can't change mp3 "Open with" "Default application" from Audacious to fx VLC under Properties in Ubuntu 16.04, and it is annoying to get your playlist deleted every time you open a single mp3-file, here is a work-around.
Go to File > Settings > Playlist and uncheck "Clear the playlist when opening files".
When you reply to a message or create a new message in Thunderbird, the default format is "Paragraph".
To change it to "Body Text", deactivate the "Use Paragraph format..." option under Edit > Preferences > Composition > General, and the default paragraph format changes from "Paragraph" to "Body Text".
