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>10. Virtual directory expiration</H1
><P
>When an application tries to access a <EM
>virtual directory</EM
> in a <EM
>virtual base directory</EM
>, <EM
>Autodir</EM
> creates the <EM
>virtual directory</EM
> in it if it does not exist already and mounts the <EM
>real directory</EM
> on it from the <EM
>real base directory</EM
>. Once this is done, a timer is started. If the <EM
>virtual directory</EM
> is not accessed from the <EM
>virtual base directory</EM
> by any application for the specified period of time, this directory is removed and the corresponding <EM
>real directory</EM
> in the <EM
>real base directory</EM
> is marked for backup.</P
><P
>The time period to wait for expiration can be given through a <A
HREF="aoptions.html#autodir_t_opt"
>command line option</A
> to <EM
>Autodir</EM
>.</P
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