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Accepted
Gaurav Agarwal
Asked: 2012-11-25 07:27:47 +0800 CST

How to find which "package can be updated"?

  • 772

I have installed Ubuntu 12.04 on Amazon EC2. Sometimes after connecting with the instance I get the following 

7 packages can be updated.
4 updates are security updates.

How can I find which packages can be updated? Can I choose if don't wish to update some packages?

updates

4 Answers

  1. To do a simulated update: sudo apt-get -s upgrade
    To update only a single package: sudo apt-get upgrade packagename_here

    • 12
  2. Best Answer

    You can see what updates are available by typing as sudo aptitude.

    For example,

    aptitude

    And if you don't want any package to update, then you can lock that package.

    1. Open a terminal
    2. Type sudo -s and hit enter

    3. Enter your password for sudo

      echo libxfont1 hold | dpkg --set-selections
    4. Replace libxfont1 with the package you want to pin
    5. Now run sudo apt-get update and then sudo apt-get upgrade.

    For more information, check how to pin packages.

    • 7

  3. Please do this

    sudo cat /var/lib/update-notifier/updates-available

    then check what packages are available for upgrade

    apt list --upgradable

    then just install what you need from the outcome above

    sudo apt-get install PACKAGE_NAME

    • 5

  4. You can hold any certain package, this will keep it at the same version no matter what.

    First run sudo -s, then echo package_name hold | dpkg --set-selections.

    You can then remove the hold with sudo apt-get install package_name.

    Hope that helps.

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