Unable to install timeshift in ubuntu 16.04











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0
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I followed these steps to install timeshift:




  1. sudo apt-add-repository -y ppa:teejee2008/ppa

  2. sudo apt-get update


then get this message:



The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B5B116B72D0F61F0
W: The repository 'http://ppa.launchpad.net/teejee2008/ppa/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.


Is timeshift safe to download and use? If so how do I go about getting it?










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  • "[H]ow to get timeshift" seems clearly explained at the source: github.com/teejee2008/timeshift/blob/master/README.md
    – user535733
    Nov 29 at 21:27












  • I followed these instructions but got the reported error
    – MRNJON
    Nov 29 at 21:33















up vote
0
down vote

favorite












I followed these steps to install timeshift:




  1. sudo apt-add-repository -y ppa:teejee2008/ppa

  2. sudo apt-get update


then get this message:



The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B5B116B72D0F61F0
W: The repository 'http://ppa.launchpad.net/teejee2008/ppa/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.


Is timeshift safe to download and use? If so how do I go about getting it?










share|improve this question
























  • "[H]ow to get timeshift" seems clearly explained at the source: github.com/teejee2008/timeshift/blob/master/README.md
    – user535733
    Nov 29 at 21:27












  • I followed these instructions but got the reported error
    – MRNJON
    Nov 29 at 21:33













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I followed these steps to install timeshift:




  1. sudo apt-add-repository -y ppa:teejee2008/ppa

  2. sudo apt-get update


then get this message:



The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B5B116B72D0F61F0
W: The repository 'http://ppa.launchpad.net/teejee2008/ppa/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.


Is timeshift safe to download and use? If so how do I go about getting it?










share|improve this question















I followed these steps to install timeshift:




  1. sudo apt-add-repository -y ppa:teejee2008/ppa

  2. sudo apt-get update


then get this message:



The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B5B116B72D0F61F0
W: The repository 'http://ppa.launchpad.net/teejee2008/ppa/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.


Is timeshift safe to download and use? If so how do I go about getting it?







restore






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edited Nov 29 at 21:48









roadmr

26.9k56378




26.9k56378










asked Nov 29 at 21:17









MRNJON

64




64












  • "[H]ow to get timeshift" seems clearly explained at the source: github.com/teejee2008/timeshift/blob/master/README.md
    – user535733
    Nov 29 at 21:27












  • I followed these instructions but got the reported error
    – MRNJON
    Nov 29 at 21:33


















  • "[H]ow to get timeshift" seems clearly explained at the source: github.com/teejee2008/timeshift/blob/master/README.md
    – user535733
    Nov 29 at 21:27












  • I followed these instructions but got the reported error
    – MRNJON
    Nov 29 at 21:33
















"[H]ow to get timeshift" seems clearly explained at the source: github.com/teejee2008/timeshift/blob/master/README.md
– user535733
Nov 29 at 21:27






"[H]ow to get timeshift" seems clearly explained at the source: github.com/teejee2008/timeshift/blob/master/README.md
– user535733
Nov 29 at 21:27














I followed these instructions but got the reported error
– MRNJON
Nov 29 at 21:33




I followed these instructions but got the reported error
– MRNJON
Nov 29 at 21:33










1 Answer
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2
down vote













It's odd that apt-add-repository couldn't download the public key, as it is available. Does your network block port 11371? I think this is needed to fetch keys, which is what failed.
You can try adding it manually, run this command:



sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 2D0F61F0


then repeat the apt-add-repository command you tried at the beginning, and it should now work because you have the key.



If this still fails, it's likely that as I mentioned your network is blocking the needed port to fetch the keys. In that case, speak to your network administrator and try to get this situation resolved on their side.






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    up vote
    2
    down vote













    It's odd that apt-add-repository couldn't download the public key, as it is available. Does your network block port 11371? I think this is needed to fetch keys, which is what failed.
    You can try adding it manually, run this command:



    sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 2D0F61F0


    then repeat the apt-add-repository command you tried at the beginning, and it should now work because you have the key.



    If this still fails, it's likely that as I mentioned your network is blocking the needed port to fetch the keys. In that case, speak to your network administrator and try to get this situation resolved on their side.






    share|improve this answer

























      up vote
      2
      down vote













      It's odd that apt-add-repository couldn't download the public key, as it is available. Does your network block port 11371? I think this is needed to fetch keys, which is what failed.
      You can try adding it manually, run this command:



      sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 2D0F61F0


      then repeat the apt-add-repository command you tried at the beginning, and it should now work because you have the key.



      If this still fails, it's likely that as I mentioned your network is blocking the needed port to fetch the keys. In that case, speak to your network administrator and try to get this situation resolved on their side.






      share|improve this answer























        up vote
        2
        down vote










        up vote
        2
        down vote









        It's odd that apt-add-repository couldn't download the public key, as it is available. Does your network block port 11371? I think this is needed to fetch keys, which is what failed.
        You can try adding it manually, run this command:



        sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 2D0F61F0


        then repeat the apt-add-repository command you tried at the beginning, and it should now work because you have the key.



        If this still fails, it's likely that as I mentioned your network is blocking the needed port to fetch the keys. In that case, speak to your network administrator and try to get this situation resolved on their side.






        share|improve this answer












        It's odd that apt-add-repository couldn't download the public key, as it is available. Does your network block port 11371? I think this is needed to fetch keys, which is what failed.
        You can try adding it manually, run this command:



        sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 2D0F61F0


        then repeat the apt-add-repository command you tried at the beginning, and it should now work because you have the key.



        If this still fails, it's likely that as I mentioned your network is blocking the needed port to fetch the keys. In that case, speak to your network administrator and try to get this situation resolved on their side.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 29 at 21:59









        roadmr

        26.9k56378




        26.9k56378






























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