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How to duplicate a whole line in Vim?

How do I duplicate a whole line in Vim in a similar way to Ctrl+D in IntelliJ IDEA/ Resharper or Ctrl+Alt+↑/↓ in Eclipse?

Solution

  • yy or Y to copy the line (mnemonic: yank)
    or
    dd to delete the line (Vim copies what you deleted into a clipboard-like "register", like a cut operation)

    then

    p to paste the copied or deleted text after the current line
    or
    Shift + P to paste the copied or deleted text before the current line