Problem : how can I copy/paste this in vim

The 9 previous yanks are saved in registers called 1 through 9. You can recall the next-to-last yank with "1p, the previous one with "2p and so on. The command :reg shows the registers that are available for pasting.

If you want a yank to last longer, use a letter register.

For the more obscure yank-related commands, start reading at :help " in the manual.

I would do that in this way (really useful for many paste):

1. Go somewhere into the word Linux, then "ayiw to copy the word
   • "a to select register «a»
   • y for copying
   • i to specify we are "in" (the word, the paragraph, ...)
   • w to choose the word
2. Got to next word w (or somewhere into the word)
3. Paste on time and save that as macro qbdiw"aPq
   • qb to start recording macro in register «b»
   • d for deleting
   • i to specify we are "in" (the word, the paragraph, ...)
   • w to choose the word
   • "a to select the register «a» (previously saved)
   • P to paste the word before the cursor
   • q to stop recording the macro
4. Then to use the macro the first time, go to the next word w and press @b
5. Finally, and it is where the advantage of this method can be seen, go the each word you want to replace and press @@

Hint: Replace the w by W in qbdiw"aPq to select word with punctuation, like HP-UX

Issue: When the word is the last in the line it will delete the space before the word.