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samhitha
Asked: 2017-03-24 03:03:57 +0800 CST

apt-get download package throws error 404 Not found

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I am trying to download ros package ros-kinetic-desktop using apt-get. I have set the sources.list and the authentication key as well. However, I am encountering an error that says:

Err:1 http://packages.ros.org/ros/ubuntu xenial/main arm64 ros-kinetic-desktop arm64 1.3.0-0xenial-20170303-020026-0800 404 Not Found [IP: 64.50.236.52 80]
W: Can't drop previleges for downloading as file 'home/sam/ros-kinetic-desktop_1.3.0-0xenial-20170303-020026-0800_arm64.deb' couldn't be accessed by user '_apt'. - pkgAcquire::Run(13: Permission)
E: Failed to fetch http://packages.ros.org/ros/ubuntu/pool/main/r/ros-kinetic-desktop/ros-kinetic-desktop_1.3.0-0xenial-20170303-020026-0800_arm64.deb 404 Not Found [IP: 64.50.236.52 80]

PS:sudo apt-get download ros-kinetic-desktop is the exact command I'm using.

Can someone please help me to resolve this. Thanks in advance.

EDIT: I am not supposed to use sudo apt-get update to update my entire cache ( especially the system packages) because the updated packages will crash my proprietary drivers. So, in order to just update the repositories I require, I manually added the ros repository to software and updates applet instead of using apt-get update. This way I am able to directly install the ros packages using install but unable to download them and manually install later.

apt

2 Answers

  1. Run

    sudo apt-get update

    (with sudo) to make sure the package list is up to date.

    Then use just

    apt-get download ros-kinetic-desktop

    (without sudo)

    If you use sudo then apt-get will download the file not as root but user _apt for security reasons. As _apt doesn't have write permission in home/sam/ you get this error.

    • 2

  2. I am not sure of why and how it happened, but restarting the system did the trick! Although it throws the warning ( as above ), the package got downloaded.

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