IT specialists often rely on automatic notification for status messages and logfiles by email. A Python script named Zeyple uses GPG to protect potentially sensitive messages against unauthorized viewing.
7z, ZIP, TAR.GZ, GZIP -- there are literally dozens of archiving formats. On top of that, there is also a multitude of tools for managing archives in different formats, and each tool has its own commands and parameters.
If you are serious about using your Raspberry Pi as a platform for writing and testing code, you'll appreciate the WebIDE software developed by Adafruit.
Is the conference before or after your publication date? What tasks do you need to complete in what order? Was Jean born before Derek? Was the Atari ST released after the Amiga? Timeline is a program that can give you fast answers to these kinds of question, typically at a glance.