Install ros-hydro-rqt failed.

ros-hydro-rqt

asked 2014-06-09 21:54:25 -0500

MIller
3 ●2 ●3 ●3

system: ubuntu 12.04 LTS ROS version 1.9.54 I try to install ros-hydro-rqt, but failed.

sudo apt-get install ros-hydro-rqt
Failed to fetch http:packages.ros.org/ros/ubuntu/pool/main/r/ros-hydro-rqt/ros-hydro-rqt_0.2.13-0precise-20140130-2154-+0000_amd64.deb  Something wicked happened resolving 'packages.ros.org:http' (-5 - No address associated with hostname)
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

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answered 2014-06-10 01:38:27 -0500

gvdhoorn
86574 ●283 ●1432 ●1054 http://cor.tudelft.nl/

updated 2014-06-10 11:34:43 -0500

Failed to fetch http:packages.ros.org

If this is really a copy/paste, then it would seem the two forward slashes (ie: "//") are missing from the URL. The correct URL is:

http://packages.ros.org

Perhaps check and make sure that your sources.list or ros-latest.list contains the correct URL?

Edit: apparently the URL was missing the forward slashes due to not being able to post URLs.

Either this is then a transient network error, or something is wrong with the cached APT data. Try doing:

sudo apt-get clean
sudo apt-get update
sudo apt-get install ros-hydro-rqt

This might clear things up.

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I delete the “//” by myself becase my account cann't post content with link.

MIller ( 2014-06-10 08:55:36 -0500 )edit

Ok, well, are you able to do a 'ping packages.ros.org' on the machine where you are getting the error?

gvdhoorn ( 2014-06-10 09:15:18 -0500 )edit

Internate is in good condition, ping time is within 30 ms.

MIller ( 2014-06-10 09:36:45 -0500 )edit

Err http://packages.ros.org/ros/ubuntu/ precise/main ros-hydro-rqt amd64 0.2.13-0precise-20140130-2154-+0000 404 Not Found

MIller ( 2014-06-10 09:37:12 -0500 )edit

I checked this directory: the coorsponding file has update to http://packages.ros.org/ros/ubuntu/pool/main/r/ros-hydro-rqt/ros-hydro-rqt_0.2.14-0precise-20140311-2004-+0000_amd64.deb So the system cannnot find it. But how can I fix this problem?

MIller ( 2014-06-10 09:45:29 -0500 )edit

I'm not sure what could be happening here, but you might want to do a 'sudo apt-get clean', followed by a 'sudo apt-get update'. Then see if you can install your package using 'sudo apt-get install ros-hydro-rqt'.

gvdhoorn ( 2014-06-10 10:13:48 -0500 )edit

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answered 2014-06-10 10:04:13 -0500

MIller
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Thank you ! I directly download the latest file from website to my computer, and then installed by Ubuntu software center. ros-hydro-rqt_0.2.14-0precise-20140311-2004-+0000_amd64.deb