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Does deleting user with command deluser deletes the password associated with that username in Linux?
Quoting the man page:
The userdel command modifies the system account files, deleting all entries that refer to login_name.
So, yes. Again, the man page states it will modify these files:
/etc/group
Group account information.
/etc/login.defs
Shadow password suite configuration.
/etc/passwd
User account information.
/etc/shadow
Secure user account information.
The password is (usually) stored in /etc/shadow.
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I have some files, for which user is nobody and group is nogroup.
How do i set user privileges so that my user can change user and group to myself.
I don't want to do it using root or sudo.
Thanks
Only owner of a file/directory can change permissions of the file/directory.
root/sudo can access any file/directory and modify any file/directory 's permissions.
So to answer your question only the users nobody and root can change the file/directory 's permissions.
Let me brief the permissions part a bit for you:
1. Changing the ownership of any file or folder can only be done by root.
2. Only the owner of the file/folder can change the group.
So, in your case you'll need root or sudo rights for performing those actions.
Hope it helps
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Attempting something devious on my machine leads to
ryan#debian:~$ sudo EAT_ALL_THE_COOKIES_BEFORE_DINNER
[sudo] password for ryan:
ryan is not in the sudoers file. This incident will be reported.
Where is this incident reported, and how do I get the log of all the nasty attempted commands?
Nevermind, I just found the answer in the alt-text at xkcd:
Replace root with your username, in my case ryan, so the log is found with:
cat /var/spool/mail/ryan
The report is sent as an email to the root user. Many Linux distributions will automatically setup an alias for that user directing the mail to the first account created during the install process.
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I want to give a specific user on Linux some privileges to enable him to run commands like shutdown or apt-get. I don't want to use the SUID bit since there are other users that I don't want to let them use these commands.
How do I do something like this?
sudo would probably be the easiest way to do this. You'll want to add something like the following to the sudoers file
username ALL=(ALL) /sbin/shutdown, /usr/bin/apt-get
where username is replaced with the user's actual username. You should be able to google for some examples - here is one such page.
Editing the sudoers file can be done safely by using the visudo program.
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Hello I use a Fedora 14 VM on my Macbook pro. I haven't logged into it for a while and now I have forgot its password, I am trying to see if there is a way I could retrieve my password. I have looked around on google, and all I get is how to change a root password, but I am not looking for that.
I am stuck at the initial login screen, and am trying to see if I can retrieve my password.
Ok, all i needed was a little patience. Below link would help us as to how to modify the password.
This one shows how to edit password for root, if someone wants to change the password for a user, then it has to be passwd username.
http://www.labtestproject.com/using_linux/step_by_step_to_reset_change_root_password_on_fedora_10
Hope this helps someone.
If you can still have full access to grub, you can add the argument "init=/bin/sh" to the kernel argument, and then boot the system. This will bring you directly to the shell (no password is asked). From there you can modify the /etc/passwd file as ease and get your system back to work.
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I have an user on my system named: website1 with his password. I need to change the name of website1 to website2. I don't want to remove it and then create a new user because I would like that website2 keep the exact same permissions as website1 on the system. I only want to change the name.
How can I do this?
usermod -l login-name old-name
You can change it with the usermod -l command. Check the usermod manual for more information.