I lost a root password and i need to give it, I treid to
change it through single usermode even though i am not get
a password, then what is the other procedure to give a root
password?
- 8 Answers
- 8821 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / hari
hi....
restart->goto shalsh mode(safe mode)->press e->select 2nd kernel line->press e, give 1(for single user mode)nd ENTER
press b(for boot)->sh-3.1# ll appear
then,sh-3.1#passwd root->now give the (new) passwd
| Is This Answer Correct ? | 6 Yes | 2 No |
Answer / sachinmali17
you need to check /etc/securetty file and u have check the permission this file
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / kvenkat
Login into single user mode and try below things:
1. passswd [ Change Password for root ]
2. rm -rf /etc/nologin
3. remove any "nologin" shell for root user in /etc/passwd file
4. chage -l root then chage -E root
5. passwd -u root
6. chattr -i /etc/passwd /etc/shadow
7. chmod 600 /etc/securetty
8. vim /etc/rc.local --> then remove any line like say "
/etc/nplogin "
9. chsh root [ /bin/bash ]
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / sampath
It will be easy to recover the root password using single
user mode, but single user mode is secured by grub password.
so that it will restrict the users by logging to the single
user mode.
we can unmake the entry in the grub.conf file by entering
the rescue mode.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / rallapalli
Enter into Single user mode and check the /etc/shadow file
is there are not if it is not there do this
#cp /etc/shadow~ /etc/shadow
now give the password
#passwd
Thanks
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / amit tanwar
i think check the permission on passwd command.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / l praveen kumar
Following is the procedure to reset root password if you are
using GRUB as a boot loader:
1. Select the kernel
2. Press the e key to edit the entry
3. Select second line (the line starting with the word
kernel)
4. Press the e key to edit kernel entry so that you can
append single user mode
5. Append the letter S (or word Single) to the end of the
(kernel) line
6. Press ENTER key
7. Now press the b key to boot the Linux kernel into
single user mode
8. At prompt type passwd command to reset password:
You need to mount at least / and other partitions:
# mount -t proc proc /proc
# mount -o remount,rw /
Change the root password, enter:
# passwd
Finally reboot system:
# sync
# reboot
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / anonymous
If you are in the list of sudoers than you can also change
the root password using
sudo passwd
| Is This Answer Correct ? | 0 Yes | 3 No |
can some one tell me the steps(with commands) to create LVM in RHEL 5????
What is s in permission linux?
How do you check the current system uptime in Linux?
What is filter command in unix?
how do u extract files from iso cd images in linux?
i am prepairing for 2+ yrs exp in oracle/unix production support, which topics should i cover in unix/linux and sql plz help
How do I run a script in linux?
in redhat Linux wat is the command to check at ahich date and time file was created?
What are linux commands useful?
What is the role of the Linux kernel?
What are the options of wc command?
How to root mirror in linux?
Linux Commands 
