Not only Ubuntu, most Linux distributions and desktop environments support the following shortcuts:
- PrtSc-Take a screenshot of the entire screen and save it to the Pictures directory.
- Shift + PrtSc-Take a screenshot of a certain area of the screen and save it to the Pictures directory.
- Alt + PrtSc-Take a screenshot of the current window and save it to the Pictures directory.
- Ctrl + PrtSc-Take a screenshot of the entire screen and save it to the clipboard.
- Shift + Ctrl + PrtSc-Take a screenshot of a certain area of the screen and save it to the clipboard.
- Ctrl + Alt + PrtSc-Take a screenshot of the current window and save it to the clipboard.