Usermod permission denied

Hi, I have the message "usermod permission denied" on pi when I try to install :
usermod -a -G dialout yourUserName.

Can you help me on that ?




  • Hello.
    You need some root permissions. Please add "sudo" before the command.
    But what are you trying to do? Installing Repetier-Host on a Pi is in general not a god idea due to the lack of performance.

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