Why do unshare can't run bash?

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I am using Arch Linux, and trying to do some experiments about linux namespace.I use the following command but doesn't get bash to work.



xtricman⚓ArchVirtual⏺️~🤐unshare -muinpUC --propagation slave --setgroups deny /usr/bin/bash
Could not get property: Access denied
nobody⚓⏺️~🤐ls
bash: fork: Cannot allocate memory
nobody⚓⏺️~🤐


Then No external commands can be run by the shell, could anybody explain the reason to me?






linux namespace unshare






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    up vote
    0
    down vote

    favorite












    I am using Arch Linux, and trying to do some experiments about linux namespace.I use the following command but doesn't get bash to work.



    xtricman⚓ArchVirtual⏺️~🤐unshare -muinpUC --propagation slave --setgroups deny /usr/bin/bash
    Could not get property: Access denied
    nobody⚓⏺️~🤐ls
    bash: fork: Cannot allocate memory
    nobody⚓⏺️~🤐


    Then No external commands can be run by the shell, could anybody explain the reason to me?






    linux namespace unshare






    share























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I am using Arch Linux, and trying to do some experiments about linux namespace.I use the following command but doesn't get bash to work.



      xtricman⚓ArchVirtual⏺️~🤐unshare -muinpUC --propagation slave --setgroups deny /usr/bin/bash
      Could not get property: Access denied
      nobody⚓⏺️~🤐ls
      bash: fork: Cannot allocate memory
      nobody⚓⏺️~🤐


      Then No external commands can be run by the shell, could anybody explain the reason to me?






      linux namespace unshare






      share













      I am using Arch Linux, and trying to do some experiments about linux namespace.I use the following command but doesn't get bash to work.



      xtricman⚓ArchVirtual⏺️~🤐unshare -muinpUC --propagation slave --setgroups deny /usr/bin/bash
      Could not get property: Access denied
      nobody⚓⏺️~🤐ls
      bash: fork: Cannot allocate memory
      nobody⚓⏺️~🤐


      Then No external commands can be run by the shell, could anybody explain the reason to me?






      linux namespace unshare




      linux namespace unshare





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