Raspbian

General

Back to CLI

`Ctrl` + `Alt` + `⬅ Backspace`

All hotkeys for Raspbian

General Run dialog	`Alt` + `F2`
General System menu	`Ctrl` + `Esc`
General Open program menu	`Alt` + `Space`
General Switch between programs	`Alt` + `⭾ Tab`
General (press underlined letter) Access dropdown	`Alt` + `A` - `Z`
General Make active window fullscreen	`Alt` + `F11`
General Close window	`Ctrl` + `Q`
General Back to CLI	`Ctrl` + `Alt` + `⬅ Backspace`

Similar combinations for other applications

Atom (Windows)

(Source: Bracket Matcher) bracket-matcher:remove-matching-brackets

All shortcuts

`Ctrl` + `Alt` + `⬅ Backspace`

Red Hat Enterprise Linux

Kill current X session. Use if normal exit procedure doesn't work

General

`Ctrl` + `Alt` + `⬅ Backspace`

Adobe Photoshop CC

Fill from history. Hold down Shift to preserve transparency

Using for painting

`Ctrl` + `Alt` + `⬅ Backspace`