42

Say that I am on line 20 and I would like to yank line 4, how can I do that?

And similarly, how can I yank a line relative to my cursor position, say the one 3 lines up?

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61

From :help :yank:

:[range]y[ank] [x]      Yank `[range]` lines [into register x].

So, to yank line 4, one would type:

:4yank

Note you can easily do this from insert mode with <C-o>; this allows you to execute one command, after which you're returned to insert mode; for example:

<C-o>:4yank

You can, of course, also use other ranges. Some examples:

  • Lines 1 to 3: :1,3yank
  • The entire buffer: :%yank
  • From the current line to the end of the buffer: :.,$:yank
  • The current line and the next 3: :.,+3yank
  • The current line and the previous 3: :-3,.yank
  • The line 3 lines above the current line: :-3yank

The most useful things to remember about ranges:

  • It's in the form of :line1,line2command.
  • A . is the current line (you can actually omit the dot in most cases; :.,+3yank and :,+3yank are the same)
  • You specify lines relative to the current position with +n and -n.

See :help [range] for more information.

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  • 6
    Bonus points for mentioning <C-o>, I'm underusing that. – PhilippFrank May 12 '15 at 11:37
  • 7
    It's also worth mentioning that you can abbreviate :4yank with :4y – NewbieOnRails May 12 '15 at 18:44
35

In addition to Carpetsmoker's answer, I should point out the awesome :help :m and :help :t.

If you want to copy line 4 to right below the current line you can do this:

:4t.

or that, if you want to copy that line right above the current line:

:4t-
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1

Besides the ex-mode commands that you've got you can achieve that also it in command mode, e.g. by: 4GY'' - which means: goto line 4 (4G), yank line (Y), and return to previous line ('').

You can also use jump marks; for your second question, e.g. by: mm3kY'm - which means: set mark m (mm), go three lines up (3k), yank line (Y), return to mark m ('m).

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  • 1
    Using `` is probably a better recommendation than '' since the former goes back to the same line and column. Ditto for `m vs. 'm. – jamessan Jun 15 '15 at 14:08
  • I agree. (Any idea how to create literal backtics in wiki markup since they have a special meaning?) - Otherwise your comment will serve well as amendment to my answer and as hint for the readers. – Janis Jun 15 '15 at 15:58
  • You have to use multiple backticks to delimit the inline code (c.f., daringfireball.net/projects/markdown/syntax#code). I know it works in questions/answers, but I couldn't get it to work in my comment. – jamessan Jun 15 '15 at 16:10
1

Simply type

:4y

to yank line 4

it will go into the unnamed register. Then, (for example) you can use p to put it elsewhere. You can also use [n]p, e.g. 10p to paste it 10 times.

You can put it into a named register such as "a" with

:4y a
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  • 2
    The part about putting it into a named register with "ay4 doesn't look right. If you do that, vim will be waiting for you to say "4 whats?". E.g. if you then hit Enter it will yank 4 lines starting at the current position, if you type /foo<Enter> it will yank til the 4th following occurrance of "foo", etc. – Don Hatch May 13 '15 at 5:34
  • The last command should read 4G"ayy. – romainl May 13 '15 at 8:13
0

You can do 

:10y <Enter> (to copy the line 10)
p (paste line 10 where the cursor is)

Setting up relative number helps in moving between lines of code as well.

:set relativenumber

Now you can copy the 5th line above the cursor with:

:-5y <Enter>
:p (to paste)
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