08-03-2011
10 More Discussions You Might Find Interesting
1. Solaris
Hi,
on solaris 10, I have two users : user1 and user2
I want to create User_Alias and Cmnd_Alias to allow them to execute a command without prompting for sudo password.
command I want these users should be able to run is '/usr/bin/su - abcd' . Also user1 and 2 need not type the 'abcd'... (6 Replies)
Discussion started by: upengan78
6 Replies
2. UNIX for Dummies Questions & Answers
Hi! I'm very new to unix, so please keep that in mind with the level of language used if you choose to help :D Thanks!
When attempting to use sudo on and AIX machine with oslevel 5.1.0.0, I get the following error:
exec(): 0509-036 Cannot load program sudo because of the following errors:... (1 Reply)
Discussion started by: Chloe123
1 Replies
3. AIX
Sudo In AIX, how to find out what commands have been run after a user sudo to another user? for example, user sam run 'sudo -u robert ksh' then run some commands, how can I (as root) find what commands have been run?
sudo.log only contains sudo event, no activity logging. (3 Replies)
Discussion started by: jalite19
3 Replies
4. Solaris
what is the configuration file for sudo? can we edit it as like other file or will it create any adverse effect on editing that file?
thanks in advance
dinu (1 Reply)
Discussion started by: dinu
1 Replies
5. Shell Programming and Scripting
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)
Discussion started by: fluoborate
9 Replies
6. Linux
Hi Unix.com people! :)
My question, I think, it's easy to understand.
I want to configure my sudoers file (/etc/sudoers) in order
to hide automatically, some repetitive and annoying commands
to be listed on auth.log (/var/log/auth.log).
Anyone know something, or know where I can... (0 Replies)
Discussion started by: fefafefa
0 Replies
7. Shell Programming and Scripting
Hi All,
I running a unix command using sudo option inside shell script. Its working well. But in crontab the same command is not working and its throwing
"sudo: sorry, you must have a tty to run sudo". I do not have root permission to add or change settings for my userid. I can not even ask... (9 Replies)
Discussion started by: Apple1221
9 Replies
8. Shell Programming and Scripting
Hi, Have a need to run the below command as a "karuser" from a java class which will is running as "root" user. When we are trying to run the below command from java code getting the below error.
Command:
sudo -u karuser -s /bin/bash /bank/karunix/bin/build_cycles.sh
Error:
sudo: sorry,... (8 Replies)
Discussion started by: Satyak
8 Replies
9. Solaris
I'm looking for some suggestions to accomplish what a specific user needs, without adding them to the "sudoers" group. I have X user, that is requesting to be able to change file permissions on items owned by others and search directories where X user doesn't have access. I'm open to any... (2 Replies)
Discussion started by: Nvizn
2 Replies
10. Red Hat
All,
I need to disable "sudo -i" and "su - " for all servers in our environment, We want to make sure no one run commands or delete files across environment using switching to root account. can you guys please lets me know if this is achievable.
Thanks and Regards
shekar (2 Replies)
Discussion started by: shekar777
2 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)