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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
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.
sudo apt-get update/etc/apt/sources.list.d/ubuntu-mozilla-daily-ppa-maverick.list