anyone know how to reset source.list?

Question

Possible Duplicate:
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

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#

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

   

   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

   

   and the

   

   and also the

   

   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..)