Snap tutorial crashed my repositories

[Liam Proven]

On Wed, 3 Oct 2018 at 12:06, Charles IRONS <irons.charles at gmail.com> wrote:
>
> Hello Liam Proven & others
>
> Thanks. I have just discovered ubuntu-users again and read your replies to my issue.
>
> I have used the last advice from Liam and saved the output because there were some warnings. Please check those marked with ????????????
>
> I am keen to upgrade to 18.04.1 but want to be sure 16.04 is fixed first.
>
> Thanks for helping an old retired end user.

Best not to send attachments to mailing lists, by the way. Most block
them. I'm surprised it worked.

The error is what it says. You have some repositories listed more than
once in your repository config files.

You need to go through

/etc/apt/sources.list

and all the files in the folder

/etc/apt/sources.list.d

... and check for duplicate lines. If there are any, comment out all
but one by inserting a # at the begi


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