Stephen P. Molnar wrote:
> The current version of R that is available in Wheezy is 2.15.1.
> However, version 2.15.2 is available at CRAN sites.  The site I use
> is http://cran.case.edu/bin/linux/debian which states:
> 
> 'If you want to have up to date R on wheezy I propose to directly
> install Dirks packages from unstable (sid) by creating a file
> /etc/apt/preferences containing
>    Package: *
>    Pin: release a=testing
>    Pin-Priority: 650
> 
>    Package: *
>    Pin: release a=unstable
>    Pin-Priority: 600
> 
> and adding a line for unstable in /etc/apt/sources.list.'
> 
> I assume that the preference file should be in /etc/apt and not in
> /etc/apt/preferences.d
> 
> My question is what should be the format of the line in the sources.lists?

This:

  deb http://ftp.us.debian.org/debian sid main
Or:
  deb http://ftp.us.debian.org/debian unstable main

Since Sid and Unstable always mean exactly the same thing, one is an
alias for the other, you can either of "sid" or "unstable" in that
field and it means exactly the same thing.

Possibly instead of "main" have "main contrib non-free" if you need
something from nonfree.  The non-free parts are officially not part of
Debian because they do not meet the Debian Free Software Guidelines.
But users sometimes need them just the same.

Bob

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