>Normally, you do `tar -clf`
> |________ stay on the same file-system.
>Otherwise toy need to use --exclude /proc. Proc is a virtual
>file-system that contains things like kcore. You can get into
>a deadlock when reading kcore and you don't want this in your
>backup anyway.
>
>
>
>
so it means, I can read /proc , write through sysctl interface but no
'copy' business ;-) .
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