Hello,
Can you config sudo to use the passphrase in the user ssh-key instead of the one in the passwd?
Some users do not have local passwords on the system and instead of adding the NOPASSWD in sudoers I would like the solution I asked about above.
Thx Jocke (3 Replies)
Hi,
I would like to know how i can perform a task, while performing ssh, sudo and command at the same time.
What I generally do is I ssh to the server, where i created private and public, so it does not prompt me for password all the time. Then i need to run "sudo su - ldaprole" to get into... (9 Replies)
Hi Gurus,
I have small issue...
I used to pass the passwd for sudo commands like below,
gzcat ~/passwd.gz | sudo su - <villin> >> eof
------
-----
------
eof
And it was able to login into "villin" sudo account successfully. But now, I'm using the same in another script for the... (2 Replies)
why I can login by telnet using root account
but when i use login by ssh using root account
it is not successful ,is it different password
i am sure ssh service is started (2 Replies)
I logged in through ssh, but can't re-login as root.
sudo login
Arch login: root
Password:
Login incorrect
Arch login:
But I am sure my password is right. Why?
But on local tty1, this works. (2 Replies)
I am writing a BASH script to update a webserver and then restart Apache. It looks basically like this:
#!/bin/bash
rsync /path/on/local/machine/ foo.com:path/on/remote/machine/
ssh foo.com sudo /etc/init.d/apache2 reloadrsync and ssh don't prompt for a password, because I have DSA encryption... (9 Replies)
Hi All,
I am trying use the below su command to execute a shell script using different user.
Caould some one please help me out as to how to pass the pass the password when prompted or is there any way to execute the shell script using other user.
I have had look at the other posts in forum... (1 Reply)
Hello All ,
Hope everyone is doing great !
can someone help me for the below problem statement with the help of a script .
1. I am having couple of Linux Servers
a. I need to login and need to do a sudo
b. need to give a user id , which will take to user directory`s homedirectory... (1 Reply)
I'm confused in the configuration of sudoers for one group of users.
The users need to execute a app from a remote machine, in this local machine they want me to allow ssh for them using sudo
for eg. sudo -u admin ssh -X euadmin@<IP address of remote> <remote script which opens a gui>
It... (1 Reply)
Hi,
I am planning to automate a deployment process and the below are the steps
Connect from windows to Unix server
Login with user name : admin and password
After logging in , switch user to root to get additional privileges
Perform actions on files and directories post switching to... (3 Replies)
Discussion started by: venkidhadha
3 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)