This is a useful PDF that I found somewhere: Vi Reference Card. Being a Vi newbie, I find that things like this do help me to find my way about.
- Halting constant disk activity on a WD My Cloud NAS
- Installing Firefox Developer Edition in Linux Mint
- Making pages of new documents look right in LibreOffice Writer on wide screens
- Carrying out a hard reset of a home KVM switch
- Trying out a new way to upgrade Linux Mint in situ while going from 17.3 to 18.1