Cannot set sources.list.d/ros-latest.list
follow the melodic installation guide key in the code
sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
my computer shows illegal option
I am sure these 3 repositories "restricted," "universe," and "multiverse" are allowed. but I got "failed to download repositories information" when I tried to download it I changed different server but the result is the same.
I got the message my RAM may not be large enough. is this the reason ?
Edit:
Ign:1 http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial InRelease
Ign:2 http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-updates InRelease
Ign:3 http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-backports InRelease
Ign:4 http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-security InRelease
Err:5 http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial Release
404 Not Found
Err:6 http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-updates Release
404 Not Found
Err:7 http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-backports Release
404 Not Found
Err:8 http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-security Release
404 Not Found
Get:9 http://packages.ros.org/ros/ubuntu xenial InRelease [4678 B]
Err:9 http://packages.ros.org/ros/ubuntu xenial InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654
Reading package lists... Done
E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-updates Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-backports Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-security Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://packages.ros.org/ros/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654
I removed the old key and key in the new key the screen shows
sudo -E apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654
Executing: /tmp/tmp.VhsX2dbmna/gpg.1.sh --keyserver
hkp ...
Could you please copy-paste the error message verbatim?
I don't have any points now :( the error message :sh: 0: Illegal option -
You don't need any points, as we don't ask you for a screenshot, but a copy-paste of the text of the error message.
Can you try the following command:
and afterwards show us the output of
just copy-paste the output of the last command (and any errors you get from the first) into your question.
Use the
editbutton/link for that.After I key in the command:
echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/ros-latest.listthe result isdeb http://packages.ros.org/ros/ubuntu xenial mainOk.
That is good.
Now try a
sudo apt update, and show us the output here.Please do not post updates here as comments. To show us console text, append it to your original question. Use the
editbutton/link for that.I'm confused by your last edit. Did you intend to show us an update?