forgot password

To reset your password see this.

http://www.psychocats.net/ubuntu/resetpassword

my problem is not solved

Why?
Please give more details.

my grub contains upuntu, upuntu recovery mode, memtest1, memtest2, kupuntu.
there is no option for kupuntu recovery mode.

you have ubuntu and kubuntu separeted in different partitions?

for example you have 2 partitions with 2 /home directories?

if you cannot answer please with your working account type the following and give for each the result.

1) sudo fdisk -lu
2) mount

so to examine your installation.

Disk /dev/sda: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0000c99a

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 39064547 19531250 83 Linux
/dev/sda2 39065598 488390655 224662529 5 Extended
/dev/sda5 97667072 273342563 87837746 b W95 FAT32
/dev/sda6 273346038 292977404 9815683+ b W95 FAT32
/dev/sda7 292980736 294004735 512000 83 Linux
/dev/sda8 294006784 488390655 97191936 8e Linux LVM
/dev/sda9 39065600 48830463 4882432 82 Linux swap / Solaris
/dev/sda10 48832512 97658879 24413184 83 Linux

/dev/sda1 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev type devtmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc
(rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/sadasivams/.gvfs type fuse.gvfs-fuse-daemon
(rw,nosuid,nodev,user=sadasivams)
/dev/sr0 on /media/BSNL 3G LW272 type iso9660
(ro,nosuid,nodev,uhelper=udisks,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500)

On Tue, Nov 9, 2010 at 1:30 PM, demosthenesk <
<email address hidden>> wrote:

> Your question #132849 on sudo in ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/sudo/+question/132849
>
> demosthenesk posted a new comment:
> if you cannot answer please with your working account type the following
> and give for each the result.
>
> 1) sudo fdisk -lu
> 2) mount
>
> so to examine your installation.
>
> --
> You received this question notification because you are a direct
> subscriber of the question.
>

sda10 is having kupuntu. (i am also having fedora. i cannot get fedora after installing upuntu. it is a seperate story. leave it now.)

ok make a temp folder for example disk10

1) mkdir disk10

2) sudo mount /dev/sda10 disk10

 in disk10 normally you will have a etc folder and a shadow file

3) sudo nano -B disk10/etc/shadow

This will open the disk10/etc/shadow file (the one that contains all the passwords) in a text editor called Nano.

Once you have it open, find the appropriate line for the account in question. It'll look something like this:

yourusername:$1$2TUdk8Z0$tb2Fn6Idgo8dq9EgYv4xZ0:13721:0:99999:7:::

where "yourusername" will be your user in example

Change the second part to match this second part:

yourusername:U6aMy0wojraho:13721:0:99999:7:::

the "U6aMy0wojraho" hash is the hash for blank password.

in this way you change the password for your user with a blank password.

Next reboot to kubuntu and you can login with blank password.
Set a new password to your user after succesfull login.

Hope to help.

if you dont like nano use gedit

gksudo gedit disk10/etc/shadow

and of course save the file. Forgot to mention it.

in line
yourusername:$1$2TUdk8Z0$tb2Fn6Idgo8dq9EgYv4xZ0:13721:0:99999:7:::

each part is separated with :

yourusername : $1$2TUdk8Z0$tb2Fn6Idgo8dq9EgYv4xZ0:13721 : 0:99999:7:::

you need to change only the hash part, dont change the rest.

Also you can copy the disk10/etc/shadow file as disk10/etc/shadow.bak before edit it.

problem solved. thanks a lot, demosthenesk.

once again i am thanking you

i am happy to help you. Have a nice day!