Linux

Linux is an open-source operating system that began in 1991 when Linus Torvalds, a university student, developed it as a personal project. Surprisingly, Linux powers 96% of the world's top 1 million web servers and 100% of supercomputers. It's free, highly customizable, and runs on everything—from smartphones (like Android) to space probes. Fun fact: Linux mascot "Tux," the penguin, was inspired by Linus's playful encounter with a penguin during a trip to Australia!

Shortcuts

Desktop

Window	Mac	Description
`A`	❌	Show the list of applications.
`CtrlAltDel`	❌	Show the Power Off dialog.
`	❌	Switch between windows from the same application, or from the selected application after Super+Tab. This shortcut uses ` on US keyboards, where the ` key is above Tab. On all other keyboards, the shortcut is Super plus the key above Tab.
`CtrlAltTab`	❌	Give keyboard focus to the top bar. In the Activities overview, switch keyboard focus between the top bar, dash, windows overview, applications list, and search field. Use the arrow keys to navigate.
`Shift` `←`	❌	Move the current window one monitor to the left.
`AltF2`	❌	Pop up command window (for quickly running commands). Use the arrow keys to quickly access previously run commands
`PgUp`	❌	Switch between workspaces(or, Page Down)
`Shift` `PgUp`	❌	Move the current window to a different workspace(or, Page Down)
`Shift` `→`	❌	Move the current window one monitor to the right.
`Tab`	❌	Quickly switch between windows. Hold down Shift for reverse order.
`AltEsc`	❌	Switch between windows in the current workspace. Hold down Shift for reverse order.
`L`	❌	Lock the screen.
`V`	❌	Show the notification list. Press Super+V again or Esc to close.
	❌	Switch between the Activities overview and desktop. In the overview, start typing to instantly search your applications, contacts, and documents

Common Editing

Window	Mac	Description
`CtrlZ`	❌	Undo the last action.
`CtrlV`	❌	Paste the contents of the clipboard.
`CtrlA`	❌	Select all text or items in a list.
`CtrlX`	❌	Cut (remove) selected text or items and place it on the clipboard.
`CtrlShiftC`	❌	Copy the highlighted text or commands to the clipboard in the Terminal.
`CtrlShiftV`	❌	Paste the contents of the clipboard in the Terminal.
`CtrlC`	❌	Copy selected text or items to the clipboard.

Capturing from the screen

Window	Mac	Description
`ShiftPrScn`	❌	Take a screenshot of the entire screen.
`AltPrScn`	❌	Take a screenshot of a window.
`PrScn`	❌	Launch the screenshot tool.
`ShiftCtrlAltR`	❌	Start and stop screencast recording.