How do l restrict more than one users on a multiple programming environment using the c shell profile. That is if a user is log-on on one terminal the system should be able to prompt a message if the users attempt to log on on another terminal. I user openserver 5.0.4 with dummy terminals, and also... (7 Replies)
Dear all,
I am trying to create a new user account that can have the minimum access to the HP-Ux box, as in it only need to perform system info query like bdf and only able to read access system log files but not able to delete any file from any other directory beside it's own user directory... (5 Replies)
Platform: AIX
Shell: KSH
Does anyone have a good way of warning users that when they do a 'vi' in a certain directory that they cannot save any changes in that directory.
For instance, if I have a production id that has all scripts in /myprod/dir, and if anyone comes to this directory and does... (1 Reply)
I have a senario and i wonder how to do it ? i used NcFTPd and i dont think its applicable using that application or i didnt know how to configure it.
i want to have a user for FTP that user is only restricted to put and get from a certain directory and all sub-directories for that directory,... (0 Replies)
I want to restrict user's loging according to number of session.
example the user named "patrik" can be login concurrently from 12 stations thru telnet the 13th if some body tries to telnet 13th session it should not allow, until any of the 12 sessions are closed.
is it possibel ...i think... (2 Replies)
hi,
I am facing a problem
from the remote system if i login to my AIX5.3 machine as root (thru telnet) the session does not expire for 2 hours even if the session is kept ideal
But whenever i do the same thing from some other user then the session is lost within 10 minutes (if session is kept... (2 Replies)
Dear All
I had one user called msc. In that i had two folder.xxx and yyy
ex: /home/msc/xxx
ex: /home/msc/yyy
Now i want that msc user only able to access xxx folder only. No other folder should be visible to it.
Kindly let me know. How it possile??
Regards
Jaydeep (3 Replies)
Hi,
I'm at AIX 5.3, I have a print queue named chqprinter, I want to allow access to print only 2 users to that print queue, jobs printed by all other users to above queue should be deleted.
Any idea how to achieve that?
---------- Post updated at 10:33 AM ---------- Previous update was at... (5 Replies)
Hello,
I would to create a new user with some restriction:
1. The user will not be able to CD any directory (I mean he'll login to the defined home directory and that's all).
2. The user will not be able to delete anything in that home directory
Thanks a lot in advance,
Shahar (1 Reply)
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
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)