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How do I restore the default repositories?

is there anyway to reset my source.list ? i try to follow the trick for this forum http://ubuntuforums.org/showthread.php?t=1219528 but not helping .. what i want is ,, to reinstall the ubuntu 1204 source list. without reinstalling the ubuntu via live cd . and make my os like fresh installing .. anyone can help me ?

thanks

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santos@santos:~$ sudo su [sudo] password for santos: root@santos:/home/santos# grep -r ppa /etc/apt /etc/apt/auth.conf:machine private-ppa.launchpad.net/commercial-ppa-uploaders/fullcircle-issue-59/ubuntu /etc/apt/auth.conf:machine private-ppa.launchpad.net/commercial-ppa-uploaders/tiberiumalliances/ubuntu /etc/apt/auth.conf:machine private-ppa.launchpad.net/commercial-ppa-uploaders/lordofultima/ubuntu /etc/apt/auth.conf:machine private-ppa.launchpad.net/commercial-ppa-uploaders/intellij-idea-ce/ubuntu /etc/apt/auth.conf:machine private-ppa.launchpad.net/commercial-ppa-uploaders/plexmediaserver/ubuntu /etc/apt/auth.conf:machine private-ppa.launchpad.net/commercial-ppa-uploaders/tiberiumalliances/ubuntu /etc/apt/sources.list.d/private-ppa.launchpad.net_commercial-ppa-uploaders_fullcircle-issue-59_ubuntu.list.save:deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/fullcircle-issue-59/ubuntu precise main #Added by software-center; credentials stored in /etc/apt/auth.conf /etc/apt/sources.list.d/skype-wrapper-ppa-precise.list.save:deb-src http://ppa.launchpad.net/skype-wrapper/ppa/ubuntu precise main /etc/apt/sources.list.d/agmenor-discvur-precise.list.save:deb-src http://ppa.launchpad.net/agmenor/discvur/ubuntu precise main /etc/apt/sources.list.d/hakermania-format-junkie-precise.list.save:deb-src http://ppa.launchpad.net/hakermania/format-junkie/ubuntu precise main /etc/apt/sources.list.d/achadwick-mypaint-testing-precise.list.save:deb http://ppa.launchpad.net/achadwick/mypaint-testing/ubuntu precise main /etc/apt/sources.list.d/achadwick-mypaint-testing-precise.list.save:deb-src http://ppa.launchpad.net/achadwick/mypaint-testing/ubuntu precise main /etc/apt/sources.list.d/fioan89-slidewall-precise.list.save:deb http://ppa.launchpad.net/fioan89/slidewall/ubuntu precise main /etc/apt/sources.list.d/nginx-stable-precise.list.save:deb-src http://ppa.launchpad.net/nginx/stable/ubuntu precise main /etc/apt/sources.list.d/private-ppa.launchpad.net_commercial-ppa-uploaders_plexmediaserver_ubuntu.list.save:deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/plexmediaserver/ubuntu precise main #Added by software-center; credentials stored in /etc/apt/auth.conf /etc/apt/sources.list.d/private-ppa.launchpad.net_commercial-ppa-uploaders_tiberiumalliances_ubuntu.list.save:deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/tiberiumalliances/ubuntu precise main #Added by software-center; credentials stored in /etc/apt/auth.conf /etc/apt/sources.list.d/folke-schwinning-personal-precise.list.save:deb http://ppa.launchpad.net/folke-schwinning/personal/ubuntu precise main /etc/apt/sources.list.d/brianrobles204-xkcd-browser-precise.list.save:deb-src http://ppa.launchpad.net/brianrobles204/xkcd-browser/ubuntu precise main /etc/apt/sources.list.d/noneed4anick-cuttlefish-precise.list.save:deb-src http://ppa.launchpad.net/noneed4anick/cuttlefish/ubuntu precise main /etc/apt/sources.list.d/private-ppa.launchpad.net_commercial-ppa-uploaders_plexmediaserver_ubuntu.list:deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/plexmediaserver/ubuntu precise main #Added by software-center; credentials stored in /etc/apt/auth.conf /etc/apt/sources.list.d/ubuntu-mozilla-daily-firefox-aurora-precise.list.save:deb-src http://ppa.launchpad.net/ubuntu-mozilla-daily/firefox-aurora/ubuntu precise main /etc/apt/sources.list.d/webapps-preview-precise.list.save:deb-src http://ppa.launchpad.net/webapps/preview/ubuntu precise main /etc/apt/sources.list.d/private-ppa.launchpad.net_commercial-ppa-uploaders_tiberiumalliances_ubuntu.list:deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/tiberiumalliances/ubuntu precise main #Added by software-center; credentials stored in /etc/apt/auth.conf /etc/apt/sources.list.d/myunity-ppa-precise.list.save:deb http://ppa.launchpad.net/myunity/ppa/ubuntu precise main /etc/apt/sources.list.d/luciomrx-switzallnew-precise.list.save:deb http://ppa.launchpad.net/luciomrx/switzallnew/ubuntu precise main /etc/apt/sources.list.d/webupd8team-y-ppa-manager-precise.list.save:deb http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu precise main /etc/apt/sources.list.d/private-ppa.launchpad.net_commercial-ppa-uploaders_intellij-idea-ce_ubuntu.list.save:deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/intellij-idea-ce/ubuntu precise main #Added by software-center; credentials stored in /etc/apt/auth.conf /etc/apt/sources.list.d/george-edison55-nitroshare-precise.list.save:deb-src http://ppa.launchpad.net/george-edison55/nitroshare/ubuntu precise main /etc/apt/sources.list.d/private-ppa.launchpad.net_commercial-ppa-uploaders_lordofultima_ubuntu.list.save:deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/lordofultima/ubuntu precise main #Added by software-center; credentials stored in /etc/apt/auth.conf /etc/apt/sources.list.d/achadwick-mypaint-testing-precise.list:deb http://ppa.launchpad.net/achadwick/mypaint-testing/ubuntu precise main /etc/apt/sources.list.d/achadwick-mypaint-testing-precise.list:deb-src http://ppa.launchpad.net/achadwick/mypaint-testing/ubuntu precise main /etc/apt/sources.list.d/atareao-atareao-precise.list.save:deb-src http://ppa.launchpad.net/atareao/atareao/ubuntu precise main root@santos:/home/santos#

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marked as duplicate by gertvdijk, Rinzwind, Luis Alvarado, Jorge Castro, hhlp Feb 4 '13 at 19:02

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
Good eye @gertvdijk. –  Luis Alvarado Feb 4 '13 at 14:21
    
@gertvdijk the link you gave not help me .. give me problem .. Fetched 25.7 MB in 7min 35s (56.4 kB/s) W: Failed to fetch ppa.launchpad.net/achadwick/mypaint-testing/ubuntu/dists/… 403 Forbidden W: Failed to fetch ppa.launchpad.net/achadwick/mypaint-testing/ubuntu/dists/… 403 Forbidden E: Some index files failed to download. They have been ignored, or old ones used instead. –  santosamaru Feb 4 '13 at 14:31
    
@santosamaru The output you just gave indicates that you didn't completely reset it. You still have PPAs installed. See the comments for someone with the exact same issue. (more specifically: see the files in the /etc/apt/sources.list.d directory) –  gertvdijk Feb 4 '13 at 14:42
    
which i means .. i have following all the step from that link i will post my source list ss @gertvdijk –  santosamaru Feb 4 '13 at 14:44
1  
@santosamaru Look at files inside the directory. You're opening a directory with your editor! Please provide the output of grep -r ppa /etc/apt run from a terminal (please copy/paste text, no need for screenshots!) –  gertvdijk Feb 4 '13 at 15:05

1 Answer 1

Well you have several ways (Am pretty sure this question is a duplicate but I can't find it):

  1. Open the DASH and type software you will see one option that says software sources

    enter image description here

    You will see that it will have several tabs that each one adds up to the amount of repository lines in your sources.list, for example you have the

    enter image description here

    and the

    enter image description here

    and also the

    enter image description here

    from which you can change in any of this what appears on your source file.

  2. Another is to literally edit the file itself. So open a terminal and:

    sudo nano /etc/apt/sources.list

    and edit away what you do not need. Add a # before the line to comment it out. It is better than deleting it, just in case you make a mistake you can go back.

Every time you change this, always do an sudo apt-get update to verify that everything is OK. apt-get will notify you if there is a problem with one of the repositories (Misspelled, Wrong symbols, etc..)

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