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Why my GID is empty?


Why is /usr/local/games after /usr/games in the default PATH?Why is usermod -a -G sudo username not working?How to set user's default GID on loginWhy such long list of users and groups in my system?LIBRARY_PATH,LD_LIBRARY_PATH empty - Ubuntu 16.0.4 LTSWhen I create two users with the same UID and GUID but different home directories, my 17.10 Ubuntu fails to boot, why?what do the parameters uid and gid with /etc/fstab do?User group membership appears to be emptyWhy my system sometimes forgets the environment variablesWhy docker is not setting proper UID?













0















I try echo $GID but get nothing. However, I can get 1000 by using id -g, what's the differences between them ?



id -u => 1000
id -g => 1000
echo $UID => 1000
echo $GID =>


The output of id:



uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),128(sambashare),999(docker)


The output of groups:



user adm cdrom sudo dip plugdev lpadmin sambashare docker


Ubuntu version:



Distributor ID: Ubuntu
Description: Ubuntu 16.04.6 LTS
Release: 16.04
Codename: xenial








share


























    0















    I try echo $GID but get nothing. However, I can get 1000 by using id -g, what's the differences between them ?



    id -u => 1000
    id -g => 1000
    echo $UID => 1000
    echo $GID =>


    The output of id:



    uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),128(sambashare),999(docker)


    The output of groups:



    user adm cdrom sudo dip plugdev lpadmin sambashare docker


    Ubuntu version:



    Distributor ID: Ubuntu
    Description: Ubuntu 16.04.6 LTS
    Release: 16.04
    Codename: xenial








    share
























      0












      0








      0








      I try echo $GID but get nothing. However, I can get 1000 by using id -g, what's the differences between them ?



      id -u => 1000
      id -g => 1000
      echo $UID => 1000
      echo $GID =>


      The output of id:



      uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),128(sambashare),999(docker)


      The output of groups:



      user adm cdrom sudo dip plugdev lpadmin sambashare docker


      Ubuntu version:



      Distributor ID: Ubuntu
      Description: Ubuntu 16.04.6 LTS
      Release: 16.04
      Codename: xenial








      share














      I try echo $GID but get nothing. However, I can get 1000 by using id -g, what's the differences between them ?



      id -u => 1000
      id -g => 1000
      echo $UID => 1000
      echo $GID =>


      The output of id:



      uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),128(sambashare),999(docker)


      The output of groups:



      user adm cdrom sudo dip plugdev lpadmin sambashare docker


      Ubuntu version:



      Distributor ID: Ubuntu
      Description: Ubuntu 16.04.6 LTS
      Release: 16.04
      Codename: xenial






      environment-variables groups uid





      share












      share










      share



      share










      asked 6 mins ago









      CoreyCorey

      10514




      10514




















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