Every time I run apt-get update, I get the following message (the exact duplicate package is different depending on the last entry in sources.list):

W: Duplicate sources.list entry http://ftp.uk.debian.org/debian/ squeeze/main armel Packages 

If I run apt-get update again, it's fine. What's going on?

  • Perhaps there are duplicated lines in sources.list....? – Jivings Jun 30 '12 at 18:29
  • @Jivings There are not – Tom Medley Jun 30 '12 at 19:17
  • @TomMedley did you remap the keyboard? – Steve Robillard Jun 30 '12 at 20:26
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    Can you please post the output of cat /etc/apt/sources.list and ls /etc/apt/sources.list.d. Thanks. – Jivings Jun 30 '12 at 21:32
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    Not a duplicate. This bug is specific to the RasPi Debian Squeeze image. – finnw Jul 3 '12 at 7:36

I think there is a bug in the image. /etc/apt/sources.list contains 2 lines that look like this

deb http://ftp.uk.debian.org/debian/ squeeze main
deb http://ftp.uk.debian.org/debian/ squeeze main non-free

To solve your problem, delete the first one.

Whilst the lines aren't exact duplicate, they do specify duplicate repositories.

  • That's fixed the problem! – Tom Medley Jul 2 '12 at 8:47
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    Well spotted Alex. – Jivings Jul 3 '12 at 8:07

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