Installing, configuring, and running the Ubuntu flavor of Linux
A number of years ago I attended the ARRL Teacher's Institute. In addition to some amazing instruction, we received some amazing gear to take home and play with. One of these was a PicoScope 2204A digital oscilloscope. I was pleasantly surprised to discover that they support the Debian family of Linux distros.
$ touch -t <YYYYDDDDHHMM>
$ touch -t 201106301416
$ touch -r <from_file> <to_file>
When I attended the Teacher's Institute ad the ARRL, one of the items included in our swag bag was an Software Defined Receiver, specifically the SDRPlay RSP1A. Binaries for Windows and Mac OSX typically work "out of the box", but not so with the Linux version. The SDRPlay folks posted an excellent video tutorial covering the process of installing the necessary drivers and libraries, and building CubicSDR from source. Here's a summary.
If you're an advanced Mac OS X user, you've undoubtedly come across the .AppleDouble directories and .DS_Store files at some point. Here's a bit of an explanation of their purpose, along with how to delete them and ensure they never return.
My recent upgrade to 18.04 Bionic Beaver went fairly smoothly. The final glitch was getting the Apple Filing Protocol (AFP) services running again. I've abandoned the use of Ubuntu for Time Machine backups, opting for a local hard drive solution instead. This just leaves file services utilizing afpd, netatalk, and avahi. My difficulty appeared to be related to the change from netatalk version 2 to 3, but not all my packages were updated in the process.
Since my household is primarily Mac based, I wanted to setup my Ubuntu server as an AFP/Time Machine backup server for the LAN. Not surprisingly, this proved possible, but not trivial. First I'll provide a summary of the necessary steps, then detailed instructions for the terminal savvy folks.