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Old 09-17-2010, 11:05 AM   #16
sattulinux
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Quote:
Originally Posted by prayag_pjs View Post
Hi Do this;
Restart your Linux system Press ctrl+alt+f2
you will get black and white screen with login option there try to login as root and put the password which you think you remember...let us know if you can login...also login as your normal user and let us know if you can login...
Prayag are you there?
Well i pressed ctrl+alt+f2, a black screen came. Then i logged in with the user name as root and the password. It was successfull. i exited and again logged in with the normal user and same password. It was again successful. But when i am giving su and trying to login, it is showing incorrect password. So, what to do next?
 
Old 09-17-2010, 11:13 AM   #17
kilgoretrout
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Try running:

$ su - root

and see if you can su to root that way.

Last edited by kilgoretrout; 09-17-2010 at 11:15 AM.
 
Old 09-17-2010, 11:16 AM   #18
prayag_pjs
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Press ctrl+alt+f2,same black and white scree will appear...
Login as root...
run this command and add this line

visudo

Code:
john  ALL=(ALL)   NOPASSWD: ALL
note replace john with your normal user

now that normal user is in the list of sudoers

after this go to your GUI and login as normal user...

open terminal and run this command

$su -

and give root password ...

do let us know ....
once you login successfully do let us know
 
Old 09-17-2010, 11:17 AM   #19
sattulinux
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Quote:
Originally Posted by kilgoretrout View Post
Try running:

$ su - root

and see if you can su to root that way.
well thanks for it! I tried it just now using "su root", but it's showing the same error- incorrect password. so what to do?
 
Old 09-17-2010, 11:21 AM   #20
kilgoretrout
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Quote:
Then i changed the ownership from root to software, so that i don't have to give the password each time.
What file(s) did you change the ownership of? If you run:

$ su
<Enter software's password>

what happens.

Edit: I'm thinking you changed the ownership of whatever terminal application you are using from root to software. Is this correct?

Last edited by kilgoretrout; 09-17-2010 at 11:24 AM.
 
Old 09-17-2010, 11:26 AM   #21
sattulinux
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Quote:
Originally Posted by prayag_pjs View Post
Press ctrl+alt+f2,same black and white scree will appear...
Login as root...
and give root password ...
do let us know ....
once you login successfully do let us know
ok fine! I gave the code and now i'm in the list of sudoers. But i'm in the same black screen, but how to go back to the GUI? please tell me that also!

Last edited by sattulinux; 09-17-2010 at 11:28 AM.
 
Old 09-17-2010, 11:30 AM   #22
prayag_pjs
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hi login as root in CLI and creat new user using

Code:
useradd newuser
password newuser
login as that normal user in GUI and try doing

Code:
su -
 
Old 09-17-2010, 11:32 AM   #23
sattulinux
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Quote:
Originally Posted by prayag_pjs View Post
hi login as root in CLI and creat new user using
Code:
useradd newuser
password newuser
login as that normal user in GUI and try doing
Code:
su -
Actually i'm still in that black screen and don't know how to come out of that? Please don't mind but since i'm new to linux, so i don't know even these basic things. so, well how to come out of that black screen??
 
Old 09-17-2010, 11:35 AM   #24
prayag_pjs
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press ctrl+alt+f7
 
Old 09-17-2010, 11:42 AM   #25
sem007
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Quote:
Originally Posted by sattulinux View Post
hi everyone! I'm using fedora-11. Initially while doing the terminal part it used to come like this- [software@localhost ~]$,,,, then i used to give the password and enter the root. Here my username is software. Then i changed the ownership from root to software, so that i don't have to give the password each time. BUT NOW when i am giving su and entering the password it is showing INCORRECT PASSWORD. I don't know what has happened. Can some one help me please??
Hi sattulinux,

There is special permission on su command.

Code:
# ls -l /bin/su
-rwsr-xr-x 1 root root 23960 Sep  4  2009 /bin/su
check is there SUID permission applied or not if not apply SUID permission.

login root user on terminal
run below command to set SUID permission

Code:
chmod 4755 /bin/su
Hope this help

Regards,
 
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Old 09-17-2010, 11:47 AM   #26
sattulinux
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Quote:
Originally Posted by prayag_pjs View Post
press ctrl+alt+f7
thanks. I came back to original screen. But now after going to terminal, when i'm entering the word root, it's showing:
bash: root: command not found
what to do now?
 
Old 09-17-2010, 11:51 AM   #27
prayag_pjs
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hi login as root in CLI and creat new user using
Code:
useradd newuser
password newuser
login as that normal user in GUI and try doing
Code:
su -
give root password you should get # prompt
 
Old 09-17-2010, 11:51 AM   #28
sattulinux
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actually i don't get it! When i went to the black screen and logged in using root, it was successful. But now when i'm using the same thing in normal screen, it is showing "command not found", it's confusing. I don't get it Prayag, what is happening?
 
Old 09-17-2010, 11:56 AM   #29
sattulinux
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Ok I'm in office and it's already late. I'm leaving now, many many thanx for spending time with me. Will contact you tomorrow as soon as i return. Bye. Gudnight.
 
Old 09-17-2010, 12:09 PM   #30
babunix
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Quote:
Originally Posted by sattulinux View Post
actually i don't get it! When i went to the black screen and logged in using root, it was successful. But now when i'm using the same thing in normal screen, it is showing "command not found", it's confusing. I don't get it Prayag, what is happening?
I think you have to look post #25 by sem007.

There might be permission issue.
I regenerate issue by removing suid and solution provided by sem007 is works fine.

have a look, that might resolve your issue.
 
  


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