12-02-2017
Linux root Password Reset
Hi ,
I ve a question about the Linux system root password change.
Which can be done using grub menu without inputting the old password.
So If anybody can change the root password without any password and then how it is secure. Anybody can manipulate the other user using the root password ?
Next question is
What is meant for sudo root password ?
BR,
PD
Last edited by Scrutinizer; 12-02-2017 at 04:03 AM..
Reason: Changed "doubt" to "question"
This User Gave Thanks to pradyumnajpn10 For This Post:
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LEARN ABOUT ULTRIX
yppasswd
yppasswd(1yp) yppasswd(1yp)
Name
yppasswd - change password in yellow pages (YP) service.
Syntax
yppasswd [ name ]
Description
The command lets you change your password in the yellow pages (YP) map, a network data base service. Only you or the superuser can change
your YP password.
When you enter the command, the program prompts you for the old password and then for the new password. Note that the passwords are not
displayed on the screen.
Next, the program asks you for the new password again, to verify that you have typed it correctly. If you do not type the passwords cor-
rectly, you will receive an error message after you enter the new password.
Your new YP password must meet one of the following requirements:
o It must be a combination of at least six alphanumeric characters, or
o It must be a minimum of four characters, with at least one being non-alphanumeric, such as a control sequence.
The command does not change the YP password. This command only changes the local password file and not the YP master password file. See
Chapter 3 of the Guide to the Yellow Pages Service for further information.
Diagnostics
Please use a longer password
Your new password does not meet the minimum length requirement.
Mismatch- password unchanged
You misspelled your new password or its verification.
couldn't change passwd
Your new password can not be activated. It must be different from your old password and your login name.
Files
Password file
Yellow Pages directory
See Also
passwd(1), passwd(5yp), ypfiles(5yp), yppasswdd(8yp)
Guide to the Yellow Pages Service
yppasswd(1yp)