Set keyboard shortcuts

To change the key or keys to be pressed for a keyboard shortcut:

Open the Activities overview and start typing Settings.
Click on Settings.
Click Keyboard Shortcuts in the sidebar to open the panel.
Click the row for the desired action. The Set shortcut window will be shown.
Hold down the desired key combination, or press Backspace to reset, or press Esc to cancel.

Pre-defined shortcuts

There are a number of pre-configured shortcuts that can be changed, grouped into these categories:

Launchers

Home folder	or or `Explorer`
Launch calculator	or `Calculator`
Launch email client	or `Mail`
Launch help browser	Disabled
Launch web browser	or or `WWW`
Search	or `Search`
Settings	`Tools`

Navigation

Hide all normal windows	Disabled
Move to workspace above	`Super`+`Page Up`
Move to workspace below	`Super`+`Page Down`
Move window one monitor down	`Shift`+`Super`+`↓`
Move window one monitor to the left	`Shift`+`Super`+`←`
Move window one monitor to the right	`Shift`+`Super`+`→`
Move window one monitor up	`Shift`+`Super`+`↑`
Move window one workspace down	`Shift`+`Super`+`Page Down`
Move window one workspace up	`Shift`+`Super`+`Page Up`
Move window to last workspace	`Shift`+`Super`+`End`
Move window to workspace 1	`Shift`+`Super`+`Home`
Move window to workspace 2	Disabled
Move window to workspace 3	Disabled
Move window to workspace 4	Disabled
Switch applications	`Super`+`Tab`
Switch system controls	`Ctrl`+`Alt`+`Tab`
Switch system controls directly	`Ctrl`+`Alt`+`Esc`
Switch to last workspace	`Super`+`End`
Switch to workspace 1	`Super`+`Home`
Switch to workspace 2	Disabled
Switch to workspace 3	Disabled
Switch to workspace 4	Disabled
Switch windows	Disabled
Switch windows directly	`Alt`+`Esc`
Switch windows of an app directly	`Alt`+`F6`
Switch windows of an application	Disabled

Screenshots

Copy a screenshot of a window to clipboard	`Ctrl`+`Alt`+`Print`
Copy a screenshot of an area to clipboard	`Shift`+`Ctrl`+`Print`
Copy a screenshot to clipboard	`Ctrl`+`Print`
Record a short screencast	`Shift`+`Ctrl`+`Alt`+`R`
Save a screenshot of a window to Pictures	`Alt`+`Print`
Save a screenshot of an area to Pictures	`Shift`+`Print`
Save a screenshot to Pictures	`Print`

Sound and Media

Eject	(Eject)
Launch media player	(Audio media)
Next track	(Audio next)
Pause playback	(Audio pause)
Play (or play/pause)	(Audio play)
Previous track	(Audio previous)
Stop playback	(Audio stop)
Volume down	(Audio lower volume)
Volume mute	(Audio mute)
Volume up	(Audio raise volume)

System

Focus the active notification	`Super`+`N`
Lock screen	`Super`+`L`
Log out	`Ctrl`+`Alt`+`Delete`
Open the application menu	`Super`+`F10`
Restore the keyboard shortcuts	`Super`+`Esc`
Show all applications	`Super`+`A`
Show the activities overview	`Alt`+`F1`
Show the notification list	`Super`+`V`
Show the overview	`Super`+`S`
Show the run command prompt	`Alt`+`F2`

Typing

Switch to next input source	`Super`+`Space`
Switch to previous input source	`Shift`+`Super`+`Space`

Universal Access

Decrease text size	Disabled
High contrast on or off	Disabled
Increase text size	Disabled
Turn on-screen keyboard on or off	Disabled
Turn screen reader on or off	`Alt`+`Super`+`S`
Turn zoom on or off	`Alt`+`Super`+`8`
Zoom in	`Alt`+`Super`+`=`
Zoom out	`Alt`+`Super`+`-`

Windows

Activate the window menu	`Alt`+`Space`
Close window	`Alt`+`F4`
Hide window	`Super`+`H`
Lower window below other windows	Disabled
Maximize window	`Super`+`↑`
Maximize window horizontally	Disabled
Maximize window vertically	Disabled
Move window	`Alt`+`F7`
Raise window above other windows	Disabled
Raise window if covered, otherwise lower it	Disabled
Resize window	`Alt`+`F8`
Restore window	`Super`+`↓`
Toggle fullscreen mode	Disabled
Toggle maximization state	`Alt`+`F10`
Toggle window on all workspaces or one	Disabled
View split on left	`Super`+`←`
View split on right	`Super`+`→`

Custom shortcuts

To create your own application keyboard shortcut in the Keyboard settings:

Click the + button. The Add Custom Shortcut window will appear.
Type a Name to identify the shortcut, and a Command to run an application. For example, if you wanted the shortcut to open Rhythmbox, you could name it Music and use the rhythmbox command.
Click the row that was just added. When the Set Custom Shortcut window opens, hold down the desired shortcut key combination.
Click Add.

The command name that you type should be a valid system command. You can check that the command works by opening a Terminal and typing it in there. The command that opens an application cannot have the same name as the application itself.

If you want to change the command that is associated with a custom keyboard shortcut, click the name of the shortcut. The Set Custom Shortcut window will appear, and you can edit the command.

Ubuntu Documentation