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Why is my GID environment vairble empty?


environment variablesEditing the environment variableWhy does Apache2 disable DISPLAY environment variable?changing /etc/environment did not affect my environment variablesWhy can't a process see environment variables set in /etc/environment?Path given in Environment variable shows empty after rebootHow to set user's default GID on loginwhat do the parameters uid and gid with /etc/fstab do?.bashrc vs environment for setting environment variablesWhy my system sometimes forgets the environment variables













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|improve this question




























    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|improve this question


























      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|improve this question
















      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|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 4 mins ago









      Olorin

      2,631924




      2,631924










      asked 23 mins ago









      CoreyCorey

      10514




      10514




















          1 Answer
          1






          active

          oldest

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          1














          I assume you're using bash as your shell. Bash doesn't set a GID variable. The list of Bash variables mentions EUID and UID, but not GID.



          Zsh, on the other hand, does set GID:



          $ bash -c 'echo $GID'

          $ zsh -c 'echo $GID'
          1000




          share






















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            1 Answer
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            active

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            active

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            active

            oldest

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            1














            I assume you're using bash as your shell. Bash doesn't set a GID variable. The list of Bash variables mentions EUID and UID, but not GID.



            Zsh, on the other hand, does set GID:



            $ bash -c 'echo $GID'

            $ zsh -c 'echo $GID'
            1000




            share



























              1














              I assume you're using bash as your shell. Bash doesn't set a GID variable. The list of Bash variables mentions EUID and UID, but not GID.



              Zsh, on the other hand, does set GID:



              $ bash -c 'echo $GID'

              $ zsh -c 'echo $GID'
              1000




              share

























                1












                1








                1







                I assume you're using bash as your shell. Bash doesn't set a GID variable. The list of Bash variables mentions EUID and UID, but not GID.



                Zsh, on the other hand, does set GID:



                $ bash -c 'echo $GID'

                $ zsh -c 'echo $GID'
                1000




                share













                I assume you're using bash as your shell. Bash doesn't set a GID variable. The list of Bash variables mentions EUID and UID, but not GID.



                Zsh, on the other hand, does set GID:



                $ bash -c 'echo $GID'

                $ zsh -c 'echo $GID'
                1000





                share











                share


                share










                answered 5 mins ago









                OlorinOlorin

                2,631924




                2,631924



























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