I have a Lucid Server (10.04) set up and I would like to change the mirror from US (or any other country) to the Main Ubuntu Mirror.
For example my two first entries in sources.list are:
deb lucid main restricted
deb-src lucid main restrictedIn a Desktop environment I would select the main mirror like this:
But how do I do that from the terminal as I don't have a graphical environment installed!
4 Answers
Open your sources.list file using your favorite text editor, e.g.
sudo nano /etc/apt/sources.listLocate the text and replace it with .
8This command should do the trick:
sudo sed -i 's| /etc/apt/sources.listIt will remove the 'us.' prefix in each of the addresses to convert them to addresses of the main server.
Of course replace 'us' by any other mirror you are using.
In depth explanation of command:
sed - stream editor for filtering and transforming text.
The -i argument is to edit a file in place.
Then 's|regexp|replacement|g', s specifying the search and replace command.
The g at the end being the argument to "globally" search.
Conclusion: replaces all occurrences of . with http:// in the file /etc/apt/sources.list.
Correct sed usage to remove/change country code "us" from source.list to something else like "au", the command will be as follows:
sed -i 's/http:\/\/us./http:\/\/au./g' /etc/apt/sources.listor just to remove "us" alone instead of changing it to something, use code below:
sed -i 's/http:\/\/in./http:\/\//g' /etc/apt/sources.listWith vim:
mv /etc/apt/sources.list{,.bak} # you may want to make a backup
vim /etc/apt/source.listType : (you need to hold Shift) to enter command-ine mode, and then type:
%s/http:\/\/us\./http:\/\//gHit Enter
Hit Esc to be sure you've exited the command-line mode and entered normal mode. Now you can scroll around the file with keyboard move keys (if you want) to make sure all occurrences of us mirrors have been edited.
Finally, exit with saving by entering command-line mode (type :) and enter wq! to save and exit vim.
