Apple OSX
CMD + CTRL + SPACEBAR
--- show emojiCTRL + ALT + SHIFT + V
--- paste without formatting⌃ + ⌘ + ⇧ + 4
--- allows you to take a screenshot and save it to your clipboardCMD + SHIFT + /
--- open help section of any app that has a help menu-item- Terminal
CTRL + U
--- remove everything on this lineCTRL + R
--- reverse search for specific string
CMD + double-click
--- click on url to open in default browser