Forgot Linux Root Password
Hello,
I installed RHEL 4 through a virtual machine on my computer. I created 2 users Root and System. The problem is i forgot my Root password and logging thru system and i dont have administrator rights for doing anything. can any one help get my root passsword.
Thanks in advance,
shushanth
user12941025 wrote:
Hello,
I installed RHEL 4 through a virtual machine on my computer. I created 2 users Root and System. The problem is i forgot my Root password and logging thru system and i dont have administrator rights for doing anything. can any one help get my root passsword.
Thanks in advance,
shushanthAnd what this has to do with an Oracle database forum? Anyways, let google be your friend,
http://www.google.co.in/search?q=how+to+break+root+password+in+linux&rls=com.microsoft:en-US:{referrer:source?}&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7GGLJ&redir_esc=&ei=3xy6S4zsL4Sy0gT87-zFCw&esrch=FT1
HTH
Aman....
Similar Messages
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Hello,
I installed Virtual Box and the pre built java development VM (http://www.oracle.com/technetwork/community/javadev-vm-192138.html). However I am not sure what the default password for root is. I can sign in as the glassfish user as in the documentation, but this user is not able to create directories. How do I reset the root password or does anyone know what the default root password is.
Thanks
MikeHI:
Tip 1) try ovsroot as password... in the Oracle VM templates this is commonly used.
Tip 2) do some documentation reading...
Tip 3) If 1 & 2 are not working hack your box :-)
- reboot your machine, go into the grub menu and add a 1 after your startup line. This will make sure you will go to runlevel 1 when you boot. Now you can change your root password.
You can find lots of manuals on how to do this... please find one example here: http://www.labtestproject.com/linuse/change_root_password.html
regards,
Johan Louwers -
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****Ratings Encourages Contributors *** -
Linux installing applications requires root password.
Can anyone explain to me why it is that on Linux, Air
requires a root password to install an application even if the
installation directory is specified as somewhere within my own home
directory?
That it asks for a root password under such circumstances
seems very wrong. The application files are being written to my
home directory, I don't need to be root to write there and I do not
want files being created in my home directory with root as the
owner, as Air does when it installs an application.
Asking for the root password also means that users who have a
Linux machine that is administered for them by someone else and do
not have root are unable to install Air applications themselves
even if the administrator has installed Air on their
machine.First of all, on behalf of myself (and anyone else who has
been wondering about this particular detail of Adobe AIR) let me
thank you for your helpful reply. This does still leave me with a
couple of questions, however...
quote:
Originally posted by:
Ashutosh Sharma
AIR applications are similar to regular native applications -
they install as native rpm/deb packages. This requires access to
the rpm/deb system database (e.g. rpm database lock). And this is
required even if the installation folder is chosen to be one that
is owned by the current non-root user. In addition, with root
privileges, it's also possible to install applications to a
location that is accessible to other users on the system.
I have confirmed for myself the accuracy of this information
and I thank you for pointing it out. While this does make some
sense on the surface, it does leave me wondering something about
the security level of this install process. When I install
applications from my Linux distribution's package sources, I have
GPG (or PGP) cryptographic key signatures ensuring that all the
packages are un-altered from their original form on the
distribution's package servers, and a team of programmers assuring
me that the code of these packages are (at least somewhat) safe as
far as they are able to tell. I am thus far unable to find
information leading me to believe that there is similar assurance
that I am not willingly installing unknown malware (keystroke
logger, spyware, etc.) disguised as a desktop widget (for example)
when installing Adobe AIR applications. As a code savvy user, I can
personally download and examine the code of many AIR apps to ensure
their safety myself before installing, but what about users who
understand code as well as they understand Martian language or
ancient Egyptian hieroglyphs? Is there any assurance process in
place for the average user similar to that of native distro
packages? If so, can anyone point me to where that is discussed on
the Adobe pages?
Also, as an aside note; root privileges are not technically
REQUIRED in order to install an RPM package in a location which the
user already has write access to, as I personally have on many
occasions installed source code packages (SRPM) from my
distribution's package manager in my home folder while logged in as
a normal user (without the use of 'su' or 'sudo' or such) for the
purpose of building newer versions of the RPM packages which they
correspond to.
quote:
Originally posted by:
Ashutosh Sharma
However, do note that when they are launched, AIR
applications run with the privileges of the user launching the
application and not root. The primary executables of AIR
applications (under the bin/ folder in the installation path) do
not have the setuid bit set. You should not be worried about AIR
applications running with root privileges, based on the fact that
their installation required superuser access - the two are
completely independent.
This does still go back to the original point about the
security of the code itself which is being installed in the first
place. What quality assurance process is in place (beyond the star
ratings system on the application showcase site) to ensure that
malware was not installed (as root) and then happily being run by
all the users of a system while blissfully unaware of the capture
of their passwords or other personal information? (Again, an
example, and not the only such possible worry.) If such an
assurance system
is already in place, where can I (and other AIR users) read
more about it?
The reasons for this concern should be obvious when one
considers that a malicious application does not necessarily need to
be run as root to still do a great deal of damage on a system and a
sufficiently sneaky malware application could possibly even
obtain root privileges once installed on a system through
some other privilege escalation exploit. As an administrator of
multiple systems and networks, I have to be cautious about which
applications I allow on to a system or network for this very
reason.
Please be aware that I am not making these points and asking
these questions to be a "troublemaker" or to shoot down the
achievements of the AIR team, or Adobe. To the contrary, I am very
impressed by the technology that I've seen so far and would
very much like to see AIR become and stay a genuinely useful
part of the web ecosystem on all platforms. As a matter of fact,
I'm personally reading a few different resources currently about
how to develop AIR applications in anticipation of satisfactory
answers to my few remaining concerns about AIR security worries. ;)
P.S.: If this forum was the wrong place to be discussing
these specific types of issues and concerns, please feel free to
point me toward a better place where such things should be better
covered and where like-minded individuals and groups might either
continue the discussion or resolve / close this concern entirely.
An IRC channel where AIR devs hang out maybe, or perhaps another
Adobe forum where security concerns are discussed, etc.? :)
Anyhow, sorry about the long rambling post. Thank you to
Ashutosh Sharma for your initial reply to this thread, and thank
you in advance to whoever may reply further and bring final
resolution to any remaining worries I and others may have regarding
these and similar potential security concerns. :) -
Hi all
I am using solaris 10 on my desktop and I am unable to login because I do not remember my root password any more.
I have searched through net any came to conclusion that I have to use CDROM to boot into single user mode and then follow the given steps.. but my problem is that I donot have a CDROM also.
I also read somewhere One can crack the password using failsafe mode but I know nothing about it.
Please Help me beacuse I need this system badly.....You can only do it with physical access to the machine (or an ALOM).
Once you have physical access to a machine, all bets are off.
If nothing else, they can put in a CD and boot some other operating system of their choice.
Or pull the hard drive out and take it away.
You can put a password on the OBP I believe which will stop anything short of stealing the harddrive.
To stop someone stealing the harddrive, about all you can do is go for an encrypted filesystem, and as far as I am aware, Solaris doesnt support that.
But no, its not really a security problem. And if it is, its not solaris fault.. -
Hello all,
I am having a problem to login as root user this is what i got:
[oracle@localhost ~]$ su
Password: passwd
su: incorrect password
Or I try
[oracle@localhost ~]$ su
Password: password
su: incorrect password
[oracle@localhost ~]$
So my question is how can I recover the root user password?
I am using RHELinux 5.2
Thanks for helpuser9362044 wrote:
Please need help..and some brains too it seems as you are not even bothering reading and attempting to research and understand the options given.
Another method would be to use the original o/s installation CD/DVD and boot from it. It should have an "emergency boot/recovery" option.This boots the o/s from the CD/DVD and detects and mounts the local hard drives. If the installation media does not support such a boot option, download an Ubuntu installation (aka Live) CD and use this to boot the server - and then manually mount the root partition.
Edit the +/etc/shadow+ file on the local drive and remove the root password string from the file. Save and exit. Reboot from the harddrive - logon without having to supply a root password.
If you cannot follows these simple instructions, then you should not be dealing with o/s admin without undergoing some formal training first. -
Hi All,
I've saved a 2.2.2 guest into a template, imported that into 3.0.2 and created a guest using it. VM starts up fine but can't remember the password for root (this was a once off where we changed the root password so a vendor could access it as root and forgot to change it back).
So I wanted to boot the guest from a System Rescue CD off the network via ftp after mounting the iso. Well, that didn't work out too well:
Error: Boot loader didn't return any data!
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Is there a way to boot a PVM guest off the network to iso's other than Oracle Linux? Or perhaps another way to reset the root password for this guest?
Thanks.831583 wrote:
Is there a way to boot a PVM guest off the network to iso's other than Oracle Linux? Or perhaps another way to reset the root password for this guest?You can't boot any PVM guest from an ISO file. You can however login to Dom0, and boot the guest using xm create -c /path/to/vm.cfg -- this will throw up the GRUB menu so you can add the "single" kernel boot parameter and change the root password in single-user mode.
Alternatively, you could boot from a Network Location using the kernel and ramdisk options. Just depends on which distribution you're using. -
Root password fails on auth to Solaris Management Console Server
I've setup Solaris 10 x86 on a VA linux 1220 server, all is good so far except when I try to create additional users. I am logged in as root, and the root password logs in to the CDE, but fails on authentication to Solaris Management Console Server when I try to use any of the management apps like computers and networks or Users. So I'm stalled at the point where I should be configuring the system. I have been very careful about typing in the password exactly as I use it in the login screen, but it never works in the System Management tools for This Computer. The password I'm using is 26 characters long, is it too long? Or is there a step I'm missing?
Thanks,
BrianOne of my famous guesses, but unless you changed the default password algorithm the maximum length of your password is 8 characters, when logging in on the console or desktop, anything typed after those eight characters will be ignored (unless this behaviour changed very recently).
Its possibly that SMC, and its server component WBEM does not ignore the extra characters, which could cause this behavior.
What happens if you try and login to SMC with the root user and only the first eight characters of your password?
Btw, if this was the problem i think there is a way to change the default crypto algorithm to something that supports more characters.
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[SOLVED] Need to change root password - current one doesn't work
Hey everybody,
Not sure where to put this, so I apologize if it's in the wrong forum.
I just installed Arch on my Dell netbook and all is well, except for issues with the root password. I am having a great deal of difficulty getting it to work. I know for a fact that I am typing it correctly. However, I did have trouble getting it set during the installation. When I try several times, I have gotten it to work, but I am getting tired of having to do that, and now I can't seem to get it to work at all. I have even tried a different keyboard, but with no luck.
Is there any way to change the root password short of a reinstall?
Thanks in advance for any help, but please keep in mind that I am relatively new to Linux and would greatly appreciate detailed instructions.
Jeff
Last edited by jlr1701 (2010-08-12 04:10:50)Solved. Should anyone else have this issue, I solved it by entering this command:
sudo passwd root
I set a new password and it seems to work fine.
Didn't know if it was possible to change the root password that way, but glad it worked! -
% in mysql root password prevents jsp page to connect
my root password to connect to the mysql database is ab12% and when i ran my jsp page which worked in my windows machine with the password asdb34, on a linux machine with mysql password ab12% its showing urlencoder error and the error pointed to the connection string telling unknow escape sequence %.
can u please help me to recover this problem other than changing the password?
how shld i rewrite my connection string
my current string is
CONNECTIONSTRING=jdbc:mysql://127.0.0.1,:3306/sitedb?user=root&password=ab12%Try the Oracle JDBC forum - http://forums.oracle.com/forums/forum.jspa?forumID=99&start=0
or Sun's JDBC forum:
http://forum.java.sun.com/index.jspa?tab=java -
Root Password Recovery Question
Hello all,
I have a question regarding root password recovery in Solaris 10.
The Server is a Sun Fire T1000; it has no CD-Rom drive, as well as no USB ports. One of our data architects who is the main user of this server has locked himself out of root (he also never created any other user accounts).
Now I know normally for root password recovery you use the solaris cd to boot into single user mode to take care of this but that's not an option currently. I was wondering if there is a way to put the hard drive as a slave in another Sun Fire T1000 server and then mount it and modify the shadow file removing the encrypted password. I've done this in other Linux OS's and it has worked but I didn't know about Solaris.
Any help would be greatly appreciated as it is for a project my company is working on and they have a presentation coming up in around 4-5 weeks.
Thank you!
-MikeWell I tried making the locked out hard drive a slave on another server of the same type. But I couldn't seem to mount it, I even tried the "touch /reconfigure; init 6" to reconfigure devices but it just didn't seem to find it. I tried mounting everything in /dev/dsk but nothing was successful.
Anyone have any other suggestions on commands that might work?
I put a purchase order in for a USB to SATA converter, and got a hold of a different Sun server which has USB ports but no SATA, only IDE. As soon as I get it i'm going to try to mount it like a USB external hard drive. I believe when mounting USB it doesn't care if it's a jump drive or a external hard drive it should still mount it correctly. Hopefully this will allow me to modify the shadow file.
Thanks in advance if anyone has any other suggestions. -
Shaman doesn't ask for root password. But gets root privileges!!
As the title says:
Shaman is launched as a reguler user, never asks for root password, but still i able to install and uninstall packages.
Either something in my system is seriously fucked, or there is a major securiy problem with shaman.
Running openbox, installed shaman while running gnome, if that has anythiung to say. Sudo is not installed.
Output from running shaman in terminal:
[gert@flyktig ~]$ shaman
This process is currently running setuid or setgid.
GTK+ does not allow this therefore Qt cannot use the GTK+ integration.
Try launching your app using 'gksudo', 'kdesudo' or a similar tool.
See http://www.gtk.org/setuid.html for more information.
Translations are enabled.
Loading translations from "/usr/share/shaman/translations/"
Parsing "core"
Parser exited
Parsing "extra"
Parser exited
Parsing "community"
Parser exited
Parser exited
Log File should be: ""
"core" ---> "http://mirror.archlinux.no/core/os/i686"
"extra" ---> "http://mirror.archlinux.no/extra/os/i686"
"community" ---> "http://mirror.archlinux.no/community/os/i686"
Root privileges retired.
"/home/gert/.config/shaman/shaman.conf"
>>
>> Shaman 1.0.9
>> Compiled against Qt 4.4.1
>> Running with Qt 4.4.3
>>
>> Our website is @ http://shaman.iskrembilen.com/ , join in!!
>> You can also find a bugtracker in the website, please use it.
>>
>> Have you found a bug? Help us solving it faster! Please read
>> http://shaman.iskrembilen.com/trac/wiki/Debugging_Shaman
>> and please follow these steps to report bugs effectively!
>>
>> Starting Up Shaman...
User agent is: "shaman/1.0.9 (Linux i686) libalpm/3.1.1"
Shaman registered on the System Bus as ":1.51"
Service org.archlinux.shaman successfully exported on the System Bus.
--> UNSETENV HTTP_PROXY
--> UNSETENV FTP_PROXY
Populating Repo column
Log file is: /var/log/pacman.log
refinePkgView
The left TextBox is over, let's do the ComboBox
Show all packages
Remove Package
"Uninstall package: alunn"
"alunn"
"community"
Process Queue
Queue Dialog started
Queue signals connected
Starting Package Removal
Root Privileges granted.
Uid is: 1000
Received Event Callback
Alpm Thread Waiting.
Entering Queue Lock
Releasing Queue Lock
Alpm Thread awake.
Received Event Callback
Alpm Thread Waiting.
Entering Queue Lock
Releasing Queue Lock
Alpm Thread awake.
Received Event Callback
Alpm Thread Waiting.
Entering Queue Lock
No scriptlet for package alunn
Releasing Queue Lock
Alpm Thread awake.
Received Event Callback
Alpm Thread Waiting.
Entering Queue Lock
No scriptlet for package alunn
Releasing Queue Lock
Alpm Thread awake.
/sbin/ldconfig: Can't create temporary cache file /etc/ld.so.cache~: Ikke tilgang
Root privileges retired.
Transaction Completed Successfully
refinePkgView
refinePkgView
The left TextBox is over, let's do the ComboBox
Show all packages
[gert@flyktig ~]$The point of this thread was that you don't need to enter the root password at all. Not the first time, not ever.
As far as I understand, it is supposed to work like this: When you first use shaman too install anything, it asks for the root password You can tick a "Do not ask me again"-box, so you don't have to enter the password again. If you tick the box and enter the password, shaman add the lines
[auth]
askforpwd=false
to the users shaman.conf-file (~./config/shaman/shaman.conf) The next time shaman is run, it checks the config file, and if the askforpwd value is set to false, it grants itself root privileges (with some nifty setuuid root-thingy, I imagine) This is not the problem - this is the feature.
The bug is this:
the fact that any user can add the lines
[auth]
askforpwd=false
to his own shaman.conf file, without ever entering the root password in shaman. The next time shaman is run, it checks the config file, and if the askforpwd value is set to false, it grants itself root privileges - even though the user has never entered the root password.
This works for any unprivileged user on the system.
If that is indeed a feature intended by any sane person, then I'm Mother Mary. And that can't be, seeing as I don't have breasts. -
Solaris 8, no root password, no login
During install I got a message like 'could not write /etc/passwd, is locked', I still continue the install, then after a while the install asks for the second software disk, this one is not recognized, so I skip it. Then after rebooting the system, it asks for a login and password, so I enter root en give my password. No way, it won't comply. So I try changing the /a/etc/passwd file (it seems to be the new environment), for instance by adding a line test::::: , so no password should be asked, this also does not work. Removing de root password from the passwd file does not work either. So, who can help me loggin in into the system without a root password, on a Linux machine this is no problem in stand-alone mode no password is asked. Booting with the b -s option gets you into the stand-alone or service mode. This is my last try, then I will throw Sun away......
PS. My system is fully recognized by the install software. No problem there.
Thanx....Did you remove the 2nd entry in /etc/shadow file?
Each entry in the shadow file has the form:
username:password:lastchg:min:max:warn:inactive:expire:flag
Thanks
-Manish -
Hi mac community,
I´m a newcomer to Mac (and Linux) and I´ve had a problem related to root password.
I accidentally entered a password for root on my mac and I can´t remember it. I asked friends that work under linux for help, but they weren´t able to solve me the problem.
We´ve tried to start up the computer from the installation CD´s to delete the '*' symbol at /etc/passwd file but we failed. We either can´t do it once we are in user account. We can´t access root by any mean...
Can you help me before I set fire to my computer? ... ...
Thanks a lot.Hello sailbillo:
Welcome to Apple discussions
To save your local fire department an emergency run, read this knowledge base article:
http://docs.info.apple.com/article.html?artnum=106156
Toward the bottom you will find the steps for resetting an administrator password.
This article has more information about the root user:
http://docs.info.apple.com/article.html?artnum=106290
Barry -
Auto mounting disk drives on click without prompting root password
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