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Thread: Sudo still gives me permission denied

  1. #1
    Join Date
    Jul 2010
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    Ubuntu 12.04 Precise Pangolin

    Sudo still gives me permission denied

    Hello there, I am trying to create a file with some text in it inside rules.d

    Code:
    sudo echo SUBSYSTEM=="usb", SYSFS{idVendor}=="0bb4", MODE="0666", OWNER="mendhak" > /etc/udev/rules.d/51-android.rules
    So I want to write that string to the 51-android.rules file. Whether or not I use sudo, the output is always


    bash: /etc/udev/rules.d/51-android.rules: Permission denied
    If I gksu gedit a file there, it works just fine and I can create it.


    However, I'd like to be able to do this via a bash script. What am I missing?

  2. #2
    Join Date
    Jun 2007
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    Poughkeepsie, NY
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    5,814
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    Ubuntu

    Re: Sudo still gives me permission denied

    try using sudo -i before issuing the command, it will place you into a root like setting so you no longer have write sudo with every command. it will last for a few minutes or until you close the terminal.
    Code:
    sudo -i
    
    echo SUBSYSTEM=="usb", SYSFS{idVendor}=="0bb4", MODE="0666", OWNER="mendhak" > /etc/udev/rules.d/51-android.rules
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  3. #3
    Join Date
    Jun 2006
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    UK
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    Ubuntu 15.04 Vivid Vervet

    Re: Sudo still gives me permission denied

    The problem is using a bash redirect with sudo.

    Code:
    sudo echo string > /path/to/file
    ... will fail with the error you see. What you can do is:

    Code:
    echo string | sudo tee /path/to/file
    I'll leave you to adapt that with your collection of strings.

    Or - you can obtain a root terminal with sudo -i as LowSky suggests.
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  4. #4
    Join Date
    Jul 2010
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    Ubuntu 12.04 Precise Pangolin

    Re: Sudo still gives me permission denied

    Very nice, I didn't know about sudo -i. I will add that to my script.

    Both of your solutions worked, thanks very much!

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