ubuntu20.04 LTS系统默认源sources.list文件的修改

  sudo gedit /etc/apt/sources.list  

  #deb cdrom:[Ubuntu 20.04 LTS _Focal Fossa_ - Release amd64 (20200423)]/ focal main restricted    # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to  # newer versions of the distribution.  deb http://cn.archive.ubuntu.com/ubuntu/ focal main restricted  # deb-src http://cn.archive.ubuntu.com/ubuntu/ focal main restricted    ## Major bug fix updates produced after the final release of the  ## distribution.  deb http://cn.archive.ubuntu.com/ubuntu/ focal-updates main restricted  # deb-src http://cn.archive.ubuntu.com/ubuntu/ focal-updates main restricted    ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu  ## team. Also, please note that software in universe WILL NOT receive any  ## review or updates from the Ubuntu security team.  deb http://cn.archive.ubuntu.com/ubuntu/ focal universe  # deb-src http://cn.archive.ubuntu.com/ubuntu/ focal universe  deb http://cn.archive.ubuntu.com/ubuntu/ focal-updates universe  # deb-src http://cn.archive.ubuntu.com/ubuntu/ focal-updates universe    ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu   ## team, and may not be under a free licence. Please satisfy yourself as to   ## your rights to use the software. Also, please note that software in   ## multiverse WILL NOT receive any review or updates from the Ubuntu  ## security team.  deb http://cn.archive.ubuntu.com/ubuntu/ focal multiverse  # deb-src http://cn.archive.ubuntu.com/ubuntu/ focal multiverse  deb http://cn.archive.ubuntu.com/ubuntu/ focal-updates multiverse  # deb-src http://cn.archive.ubuntu.com/ubuntu/ focal-updates multiverse    ## N.B. software from this repository may not have been tested as  ## extensively as that contained in the main release, although it includes  ## newer versions of some applications which may provide useful features.  ## Also, please note that software in backports WILL NOT receive any review  ## or updates from the Ubuntu security team.  deb http://cn.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse  # deb-src http://cn.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse    ## Uncomment the following two lines to add software from Canonical's  ## 'partner' repository.  ## This software is not part of Ubuntu, but is offered by Canonical and the  ## respective vendors as a service to Ubuntu users.  # deb http://archive.canonical.com/ubuntu focal partner  # deb-src http://archive.canonical.com/ubuntu focal partner    deb http://security.ubuntu.com/ubuntu focal-security main restricted  # deb-src http://security.ubuntu.com/ubuntu focal-security main restricted  deb http://security.ubuntu.com/ubuntu focal-security universe  # deb-src http://security.ubuntu.com/ubuntu focal-security universe  deb http://security.ubuntu.com/ubuntu focal-security multiverse  # deb-src http://security.ubuntu.com/ubuntu focal-security multiverse    # This system was installed using small removable media  # (e.g. netinst, live or single CD). The matching "deb cdrom"  # entries were disabled at the end of the installation process.  # For information about how to configure apt package sources,  # see the sources.list(5) manual.    

  sudo apt update

您可能感兴趣的文章: