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Thread: How to write on a file?

  1. #1
    Join Date
    Mar 2014
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    14

    How to write on a file?

    Hi,
    I have troubles to write on my file /etc/lightdm/lightdm.conf
    I typed sudo nano /etc/lightdm/lightdm.conf to open my file but I can only read (and not write).

    This didn't work
    http://ubuntuforums.org/showthread.php?t=2141347

    but it's true, I am in recovery mode
    Last edited by Elfy; March 20th, 2014 at 09:43 AM.

  2. #2
    Join Date
    May 2007
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    The New Forest
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    Distro
    Xubuntu Development Release

    Re: How to write on a file?

    If you've only got read access then I'd say you've not mounted it properly to enable write.

    mount -o rw,remount /

    IF you still have issues - run one of the other commands in the recovery menu - grub update for instance, then try the root terminal again

  3. #3
    Join Date
    Mar 2014
    Location
    Netherlands
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    Ubuntu 13.10 Saucy Salamander

    Re: How to write on a file?

    Run the following script, it will open the requested file as root so you can edit it.
    gedit-su.sh
    Make sure that you allow the file to run in a terminal.

    Try also advice given above.
    Last edited by Korkel; March 20th, 2014 at 09:54 AM. Reason: Added information.

  4. #4
    Join Date
    Jul 2005
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    England
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    Re: How to write on a file?

    Recovery mode by default mounts the filesystem now as read only (to save potentially damaging activity by users who don't know what they're doing, I think), so to make any changes to the system files you need to run that command mentioned by Elfy.
    DISTRO: Xubuntu 14.04-64bit --- Code-tags --- Boot-Repair --- Grub2 wiki & Grub2 Basics --- RootSudo

  5. #5
    Join Date
    May 2007
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    The New Forest
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    Xubuntu Development Release

    Re: How to write on a file?

    Quote Originally Posted by Korkel View Post
    Run the following script, it will open the requested file as root so you can edit it.
    gedit-su.sh
    Make sure that you allow the file to run in a terminal.

    Try also advice given above.
    How does a script that includes running gedit help?

    In addition the thread has no prefix - what about if they are using Xubuntu, Lubuntu, Kubuntu ?

    Please stay on topic for the thread - which is running nano in recovery mode - there would be no need for sudo anyway once the filesystem is mounted.

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