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How do I fix this “E:Type '*' is not known on line * in source list …” update error?

Recently I installed FF 4 by command line following error seen

E:Type tu-mozilla-daily/ppa/ubuntu is not known on line 2 in source list

/etc/apt/sources.list.d/ubuntu-mozilla-daily-ppa-maverick.list due to which neither update manager nor synaptic package manager are working

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Post the output of sudo apt-get update –  karthick87 Dec 29 '10 at 7:02
    
post the contents of /etc/apt/sources.list.d/ubuntu-mozilla-daily-ppa-maverick.list –  aneeshep Dec 29 '10 at 8:25
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marked as duplicate by htorque, Stefano Palazzo Jan 19 '12 at 23:36

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1 Answer

There seems to be a problem with the file that tells Ubuntu where to find Firefox 4.

You can remove it with this command:

su rm /etc/apt/sources.list/ubuntu-mozilla-daily-ppa-maverick.list

After that your system should update again.

To install firefox 4 just copy and paste in a terminal this command:

sudo apt-add-repository ppa:ubuntu-mozilla-daily

Afterwards you should be able to install it from the Software Centre, or using the terminal:

sudo apt-get install firefox-4.0

Note that this is a daily build version of a beta software, expect bugs.

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