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I want to install Ubuntu 11.10. Is there any way to keep my current RSA keys?
Yes, easily. Simply copy the ~/.ssh directory onto an external drive, perform the install, then copy them back.
When you reinstall Ubuntu you can keep your home folder, with ALL your settings, files, etc.
Just don't format any partitions and your /home will be kept.
In particular, your private authentication keys are preserved.
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