How to run sudo command from guest account in UBUNTU?

In case like I had – not able to access my account – you need to know how to run sudo commands from Guest account in UBUNTU.

When you need this? Well, I can’t tell you exactly when, but I had situation where I wanted to restore – recover – data from one disk to my primary hard drive and in which case my hard drive get full leaving my system paralyzed.

First to mention that I used ddrescue for restoring data from lost partition and that this software is very good for that purpose. If you ever stuck with lost partition on UBUNTU then I suggest you to try this powerful piece of software.

Anyway, like I said – my system get so slow and unable to do anything after I fill up my hard drive leaving it with 0Bytes of free space.

After restarting my UBUNTU 14.04 and logging in into my account I noticed that OS can’t load my profile. Probably because there is no free space for that account on my hard drive.

Searching the internet I found that I could run some commands with permissions I need even from Guest account. I’m talking about Default UBUNTU Guest account.

How to do that? How exactly I can run sudo commands while I’m running UBUNTU in Guest account?

Go to Guest account and while you are logged use this key combination
ctrl+alt+F1
which will start TTY where you will be prompted to log in. There you choose Username with privileges and type a password – confirm with enter and viola. You can now execute commands with sudo privileges.

In my case I needed command to delete this large image.img file I got while using ddrescue. Hard drive I was restoring is a much more larger than the one where image file was created. My mistake I admit.

Solution for my problem – to log in back to my profile and start using it – was to delete file image.img

Here is procedure

From TTY I logged into my account and run command

sudo  rm -rf /media/image.img

After that I restarted Computer and logged into my original account without any problems.

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