30.7 Using Buffers to Move or Copy Text

In a vi editing session, your last deletion (d or x) or yank (y) is saved in a buffer. You can access the contents of that buffer and put the saved text back in your file with the put command (p or P). A frequent sequence of commands is:

5dd   delete 5 lines
   move somewhere else

p   put the 5 deleted lines back in a new
   location, below the current line

What fewer new users are aware of is that vi stores the last nine (30.8) deletions in numbered buffers. You can access any of these numbered buffers to restore any (or all) of the last nine deletions. (Small deletions, of only parts of lines, are not saved in numbered buffers, however.) Small deletions can be recovered only by using the p or P command immediately after you've made the deletion.

vi also allows you to yank (copy) text to "named" buffers identified by letters. You can fill up to 26 (a-z) buffers with yanked text and restore that text with a put command at any time in your editing session. This is especially important if you want to transfer data between two files, because all buffers except named buffers are lost when you change files. See article 30.5.