Re: problem with corrupted root password
Hi the list, Wed, 14 Jan 2015 17:51:35 -0700 Bob Proulx wrote : > Did you get added to the sudo group? If you are lucky then you did > and you can use your own password instead of root. > > $ sudo passwd root > $ su - > # Indeed, it is the easiest way. > [...] > $ sudo -l Using this, you will know what you can do. Some times ago, I read an interesting article about reseting root password: http://www.iodigitalsec.com/reset-linux-root-password/ You can first try to stop the bootloader in its initial phase and pass /bin/sh as initial program instead of /sbin/init or /bin/systemd. This allows to boot and get full rights to your system. Nice if you have no Rescue CD. > > Bob Jean-Marc pgpVnBGLCUs_J.pgp Description: PGP signature
Re: problem with corrupted root password
On Thu, Jan 15, 2015 at 12:47:08PM +0100, mrr wrote: > On 15/01/2015 01:00, Gary Dale wrote: > >On 14/01/15 04:26 PM, Rob Owens wrote: > >>On Wed, Jan 14, 2015 at 03:07:09PM -0500, Comer Duncan wrote: > >>>I recently got wheezy up and running. I installed xfce4 and like it. > >>> > >>>However, today in the process of trying to spawn a root terminal (in > >>>Accessories) and going through a cycle of trying to get authorized but > >>>being prevented by repeated complaints that the system password I > >>>used was > >>>not correct, I now find that I can not get logged in in single-user > >>>mode! > >>>I have thus royally screwed up. So, how can I get the system password > >>>changed to something new? > >>> > >>>Thanks for help and apologies for making such an error. > >>Boot using a Live CD, then as root: > >> > >>mount /dev/sda1 /mnt/sda1 (or whatever device is your root partition) > >>chroot /mnt/sda1 > >>passwd > >I'd change the chroot command to > > chroot /mnt/sda1 bash > > > >to ensure you get the correct shell. System Rescue CD, for example, uses > >zsh by default so chrooting with specifying the shell will get you a > >not-found error. > > > > > > Wouldn't it work too if you delete the root line in /etc/shadow ? > When I say delete, I mean just the hash, you would leave a line: > > root: > I tried this with a test user and it worked. But there are fields after the password hash that remain. My user's line in /etc/shadow looked like this: junk::16450:0:9:7::: I was able to login as the 'junk' user without a password. I wasn't even asked for a password. However, 'su junk' from my regular user account did not work. > And just for fun (well maybe I'll try this later) if you take your > user hash in the same file and copy it in the place of the root > hash, wouldn't root get the same password as the user one? > I tested this too, and it worked for both a login and for su. Thanks for the ideas! -Rob signature.asc Description: Digital signature
Re: problem with corrupted root password
On 15/01/2015 01:00, Gary Dale wrote: On 14/01/15 04:26 PM, Rob Owens wrote: On Wed, Jan 14, 2015 at 03:07:09PM -0500, Comer Duncan wrote: I recently got wheezy up and running. I installed xfce4 and like it. However, today in the process of trying to spawn a root terminal (in Accessories) and going through a cycle of trying to get authorized but being prevented by repeated complaints that the system password I used was not correct, I now find that I can not get logged in in single-user mode! I have thus royally screwed up. So, how can I get the system password changed to something new? Thanks for help and apologies for making such an error. Boot using a Live CD, then as root: mount /dev/sda1 /mnt/sda1 (or whatever device is your root partition) chroot /mnt/sda1 passwd I'd change the chroot command to chroot /mnt/sda1 bash to ensure you get the correct shell. System Rescue CD, for example, uses zsh by default so chrooting with specifying the shell will get you a not-found error. Wouldn't it work too if you delete the root line in /etc/shadow ? When I say delete, I mean just the hash, you would leave a line: root: And just for fun (well maybe I'll try this later) if you take your user hash in the same file and copy it in the place of the root hash, wouldn't root get the same password as the user one? All this from a boot cd of course! -- mrr -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/54b7a8bd$0$2316$426a7...@news.free.fr
Re: problem with corrupted root password
Comer Duncan wrote: > However, today in the process of trying to spawn a root terminal (in > Accessories) and going through a cycle of trying to get authorized but > being prevented by repeated complaints that the system password I used was > not correct, I now find that I can not get logged in in single-user mode! > I have thus royally screwed up. So, how can I get the system password > changed to something new? Did you get added to the sudo group? If you are lucky then you did and you can use your own password instead of root. $ sudo passwd root $ su - # Worth a try. Remember that sudo asks for your password not root's password. Also you can use sudo to list what sudo actions are available to you. $ sudo -l Bob signature.asc Description: Digital signature
Re: problem with corrupted root password
On 14/01/15 04:26 PM, Rob Owens wrote: On Wed, Jan 14, 2015 at 03:07:09PM -0500, Comer Duncan wrote: I recently got wheezy up and running. I installed xfce4 and like it. However, today in the process of trying to spawn a root terminal (in Accessories) and going through a cycle of trying to get authorized but being prevented by repeated complaints that the system password I used was not correct, I now find that I can not get logged in in single-user mode! I have thus royally screwed up. So, how can I get the system password changed to something new? Thanks for help and apologies for making such an error. Boot using a Live CD, then as root: mount /dev/sda1 /mnt/sda1 (or whatever device is your root partition) chroot /mnt/sda1 passwd I'd change the chroot command to chroot /mnt/sda1 bash to ensure you get the correct shell. System Rescue CD, for example, uses zsh by default so chrooting with specifying the shell will get you a not-found error. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/54b6f53e.60...@torfree.net
Re: problem with corrupted root password
On Wed, Jan 14, 2015 at 03:07:09PM -0500, Comer Duncan wrote: > I recently got wheezy up and running. I installed xfce4 and like it. > > However, today in the process of trying to spawn a root terminal (in > Accessories) and going through a cycle of trying to get authorized but > being prevented by repeated complaints that the system password I used was > not correct, I now find that I can not get logged in in single-user mode! > I have thus royally screwed up. So, how can I get the system password > changed to something new? > > Thanks for help and apologies for making such an error. Boot using a Live CD, then as root: mount /dev/sda1 /mnt/sda1 (or whatever device is your root partition) chroot /mnt/sda1 passwd signature.asc Description: Digital signature
problem with corrupted root password
I recently got wheezy up and running. I installed xfce4 and like it. However, today in the process of trying to spawn a root terminal (in Accessories) and going through a cycle of trying to get authorized but being prevented by repeated complaints that the system password I used was not correct, I now find that I can not get logged in in single-user mode! I have thus royally screwed up. So, how can I get the system password changed to something new? Thanks for help and apologies for making such an error. Comer
