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I was following some guide to create key-pair for my remote linux system, one of the steps being copy the public key generated and saved on my local computer to the authorized-keys file on remote computer. I tried ctrl + c and then ctrl + v to nano/vi editor in the "putty" window, but it doesn't work(nothing appears in the editor). Do I really have to manually type in the keys or there is some other way to copy and paste it?

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You can of course use the mouse, but that runs the risk of accidentally selecting/pasting due to mouse-movement.

PuTTY recognizes ShiftInsert for pasting from the clipboard. This works reliably (key bounce is rare). You can also change the behavior of the right-click to get a menu, as noted in Greg Ferro's page.

Further reading:

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If you've got content from another application copied into the clipboard on your local machine, right-click anywhere within the PuTTY window to paste it into the remote shell.

Note: instead of pasting the key into a text editor, you can use echo and redirect its output to authorized-keys, like so: echo [paste your public key here] >> ~/.ssh/authorized_keys. In the past, I've had issues pasting into nano/vim with PuTTY (though they may have fixed that behavior).

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Try shift-right clicking instead.

I, too, found that right-click alone would not work (in nano)--even though right-clicking at the terminal WOULD paste the clipboard. And I found all kinds of suggestions of things to try (ctrl-shift-v, shift-insert), none of which would work. Finally, I found someone suggesting shift-right click, and it worked without any needed mods. Salvation when one has to insert long or multiple lines from outside the editor!

That said, I found some multi-line text would paste while some would not. In that case, if I pasted it a couple of lines at a time, it worked. Odd. Sharing that in case it may help someone else, or they may know what was up.

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you can login FTP wit Winscp(in Windows) or Filzilla (in Linux) and go to file .ssh/authorized_keys end open it and copy . is better and these Software are helpful and fast to change files

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In all place, nano editor works the same!

Lines can be cut with the shortcut Ctrl+K (copied with Alt + ^) and paste with Ctrl+U.

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