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I'm completely new to Linux OS environment & wanted to experiment a bit.

After installing Ubuntu 18.04.2 TLS (& productivity software), I tried back-up my system w/ the Backup software provided

I got my first error: Failed to execute child process "duplicity" (No such file or directory).

I read on this forum that I had to install Duplicity to get it to work.

So, I ran this command:

sudo apt install duplicity

and got another error:

Reading package lists... Done
Building dependency tree
Reading state information... Done

E: Unable to locate package deja-dup-backend-gvfs

Help would be appreciated before I sink down an error rabbit hole

Was also told to run these:

apt-cache policy | egrep -vi translat

Package files:

100 /var/lib/dpkg/status

release a=now

Package files:

apt-cache policy duplicity

duplicity:

Installed: (none)

Candidate: (none)

Version table:

Thanks Much!

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  • Please edit your question and show apt-cache policy | egrep -vi translat and apt-cache policy duplicity
    – nobody
    Commented Jul 26, 2019 at 15:28
  • Done. Thanks for the help.
    – Never3Putt
    Commented Jul 26, 2019 at 22:59
  • 1
    Something odd is going on. Is your system a new install, not an upgrade? Because deja-dup-backend-gvfs does not appear to be an 18.04 package (it is in xenial). It is also concerning that there is no candidate for duplicity. I fear something is deeply wrong with your system's apt setup.
    – Organic Marble
    Commented Jul 27, 2019 at 0:57
  • I agree with @OrganicMarble 's assessment. Please post the output of sudo apt update && sudo apt dist-upgrade but be prepared to reinstall (Remember how many times you've reinstalled Windows before you got it right? You're up the same learning curve, but with help now...) ;-)
    – Fabby
    Commented Jul 27, 2019 at 8:04

2 Answers 2

Reset to default
1

Where is your sources.list gone?

create the file/etc/apt/sources.list with following content.

deb http://archive.ubuntu.com/ubuntu bionic main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu bionic main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu bionic-updates main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu bionic-updates main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu bionic-security main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu bionic-security main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse

deb http://archive.canonical.com/ubuntu bionic partner
# deb-src http://archive.canonical.com/ubuntu bionic partner

Then update package information from all configured sources with

sudo apt update 

sudo apt install duplicity
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  • ** (gedit:29979): WARNING **: 20:24:55.295: Set document metadata failed: Setting attribute metadata::gedit-spell-language not supported
    – Never3Putt
    Commented Jul 30, 2019 at 0:26
  • Seemed to resolve the issue, but I got the above error when editing the the sources.list file with gedit
    – Never3Putt
    Commented Jul 30, 2019 at 0:36
  • Only, warnings if program works, nothing to do.
    – nobody
    Commented Jul 30, 2019 at 9:17
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I've managed to resolve this particular issue by uninstalling the respectful built-in version on deja-dup and replace it with corresponding snap version. Seems worked for me at least. Source: launchpad comment

sudo apt remove deja-dup

snap install deja-dup --classic
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  • this is not working =(
    – Madeo
    Commented Jun 12, 2021 at 9:30

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