IntelliJ IDEA · Duplicate the line or selection
Editing
Windows · Linux
Ctrl+DMac
Cmd+DCopies the selection, or the whole line when nothing is selected. It confuses people coming from VS Code, where the same keys add a cursor at the next match; here that job belongs to Alt+J on Windows and Ctrl+G on a Mac.
- Group
- Editing
- Keys held
- 2
IntelliJ IDEA ships a different default keymap per platform, and two of them on macOS — "macOS" and "macOS System Shortcuts" — so when nothing works, look at Keymap in Settings first; whichever you pick then serves PyCharm, WebStorm, GoLand and Android Studio unchanged.
Reading the key names
- Keys joined by + are pressed together: Ctrl+Shift+P means hold Ctrl and Shift, then P.
- On a Mac, Cmd is ⌘, Option is ⌥ (labelled Alt on some keyboards), Control is ⌃ and Shift is ⇧.
- Windows Ctrl usually becomes Cmd on a Mac, but not always — this reference lists both combinations separately.
- With a Korean, Japanese or Chinese input method active, shortcuts built on letter keys may not fire. Switch to Latin input and try again.
- When a combination does nothing, another program has often claimed it as a global shortcut first.
Common questions
Q. What is the shortcut for Duplicate the line or selection in IntelliJ IDEA?
Copies the selection, or the whole line when nothing is selected. It confuses people coming from VS Code, where the same keys add a cursor at the next match; here that job belongs to Alt+J on Windows and Ctrl+G on a Mac. It is Ctrl+D on Windows and Cmd+D on a Mac.
Q. Is it the same on Windows and Mac?
No — Ctrl+D on Windows, Cmd+D on a Mac.
Q. How many keys is that?
2 pressed together. The combination sits under Editing in IntelliJ IDEA.