Android SDK Platform Tools is a component for the Android SDK. It includes tools that interface with the Android platform, such as adb, fastboot, and systrace. These tools are required for Android app development. They're also needed if you want to unlock your device bootloader and flash it with a new system image.

Although some new features in these tools are available only for recent versions of Android, the tools are backward compatible, so you need only one version of the SDK Platform Tools.

These rules refer to 'Run Apps on a Hardware Device - Android Studio' and include many suggestions from the Archlinux and Github Communities.

This application provides display and control of Android devices connected on USB. It does not require any root access.

the most valuable use of time is to waste it

KShutdown is a graphical shutdown utility that works
with many Desktop Environments. It allows you to turn off
or suspend a computer at a specified time. It features
various time and delay options, command-line support,
and notifications.

CryFS encrypts your files, so you can safely store them anywhere. It works well together with cloud services like ownCloud, Dropbox and others.

Glow is a terminal based markdown reader designed from the ground up to bring
out the beauty—and power—of the CLI.

Use it to discover markdown files, read documentation directly on the command
line and stash markdown files to your own private collection so you can read
them anywhere. Glow will find local markdown files in subdirectories or a local
Git repository.