Don't want to use useradd command to create a new user
I am doing manual addition of accounts. Actually I am writing a script and I am working on RedHat7.1 system. What I am trying to do is run the script and pass all the values of the username password and group as command line parameters. Now... (2 Replies)
Can any one tell me if i dun want using 'useradd' command to add new user, it is have any command i can use to add a new user?and any extra step needed for my local environment? (3 Replies)
hi all
i am writing a script to create user and group from the input given to script
for eg. script needs to values
1. mode - 1 or 2
2. id - if mode is 1 then id should be 2 char like x1 / v1 / v2
if mode is 2 then id should be 1 char like x / v / e
from these to values group is... (1 Reply)
Morning guys, I'm hoping you can advise me as to whether or not the following is possible.
Is there a way of firing off an scp command with a sudo user as the user?
e.g. I am logged onto server1 as smith, but want to pull files from server2 that I can only read as sudo jones.
In my mind it... (3 Replies)
hi..
i want to know when we add a new user by useradd command in linux "ram" in the system then bydefault " ram "
name directory will create inside /home/ram . why..??
i want to know behind this logic .
please help me. (1 Reply)
Hi, I need to create a user from a bash script so i have to use useradd. The problem is that when i create a user with:
useradd -d /home/sample -m sample
after i login with that user I have no history in bash, path do not appears, i can't use arrows and so on. When I use adduser everything is... (5 Replies)
Hello! Can anyone please assist:
Question:
On Linux Server I have created two users John and Matt. I want to give both the users the ability to run 'more' and 'tail -f' commands on the log file in the directory /var/log/test.log. I do not want to give them SU rights.
Can any one please... (6 Replies)
I am trying to run a command from different user on my server. However when i execute the command it asks for password can you please help.
when i use this command to switch user no password is required
1) sudo su - bilbtf42
when i use
2) sudo su - bilbtf42 cp file1 direcotry1/file1
... (3 Replies)
Hi folks,
Here is my question of the day 8-)
I have to provide the ability to sudo su - orapd2 & sudo su - pd2adm for the following people
User A, B, C, D which all of them are part of the group staff.
orapd2 and pd2adm are also users. Users A, B, C, D should not type the password for... (2 Replies)
Hello All,
I am trying to grant sudo privileges to a set of users (say tom and jerry) to sudo to another set of users (jim, harry). This is because we don't want to disclose the password of jim and harry.
I did defined the user_alias and runas alias.
%wms ALL = (USR) /usr/bin/su -, where wms... (7 Replies)
Discussion started by: ibmtech
7 Replies
LEARN ABOUT LINUX
sudo_root
sudo_root(8) System Manager's Manual sudo_root(8)NAME
sudo_root - How to run administrative commands
SYNOPSIS
sudo command
sudo -i
INTRODUCTION
By default, the password for the user "root" (the system administrator) is locked. This means you cannot login as root or use su. Instead,
the installer will set up sudo to allow the user that is created during install to run all administrative commands.
This means that in the terminal you can use sudo for commands that require root privileges. All programs in the menu will use a graphical
sudo to prompt for a password. When sudo asks for a password, it needs your password, this means that a root password is not needed.
To run a command which requires root privileges in a terminal, simply prepend sudo in front of it. To get an interactive root shell, use
sudo -i.
ALLOWING OTHER USERS TO RUN SUDO
By default, only the user who installed the system is permitted to run sudo. To add more administrators, i. e. users who can run sudo, you
have to add these users to the group 'admin' by doing one of the following steps:
* In a shell, do
sudo adduser username admin
* Use the graphical "Users & Groups" program in the "System settings" menu to add the new user to the admin group.
BENEFITS OF USING SUDO
The benefits of leaving root disabled by default include the following:
* Users do not have to remember an extra password, which they are likely to forget.
* The installer is able to ask fewer questions.
* It avoids the "I can do anything" interactive login by default - you will be prompted for a password before major changes can happen,
which should make you think about the consequences of what you are doing.
* Sudo adds a log entry of the command(s) run (in /var/log/auth.log).
* Every attacker trying to brute-force their way into your box will know it has an account named root and will try that first. What they do
not know is what the usernames of your other users are.
* Allows easy transfer for admin rights, in a short term or long term period, by adding and removing users from the admin group, while not
compromising the root account.
* sudo can be set up with a much more fine-grained security policy.
* On systems with more than one administrator using sudo avoids sharing a password amongst them.
DOWNSIDES OF USING SUDO
Although for desktops the benefits of using sudo are great, there are possible issues which need to be noted:
* Redirecting the output of commands run with sudo can be confusing at first. For instance consider
sudo ls > /root/somefile
will not work since it is the shell that tries to write to that file. You can use
ls | sudo tee /root/somefile
to get the behaviour you want.
* In a lot of office environments the ONLY local user on a system is root. All other users are imported using NSS techniques such as
nss-ldap. To setup a workstation, or fix it, in the case of a network failure where nss-ldap is broken, root is required. This tends to
leave the system unusable. An extra local user, or an enabled root password is needed here.
GOING BACK TO A TRADITIONAL ROOT ACCOUNT
This is not recommended!
To enable the root account (i.e. set a password) use:
sudo passwd root
Afterwards, edit the sudo configuration with sudo visudo and comment out the line
%admin ALL=(ALL) ALL
to disable sudo access to members of the admin group.
SEE ALSO sudo(8), https://wiki.ubuntu.com/RootSudo
February 8, 2006 sudo_root(8)