i have a script that needs to be run as a specific user. lets call this specific user "skysmart".
sure, i can check the username of the person running the script and if it isn't "skysmart", simply abort with a descriptive error message. but then, that would require the user to have to "sudo su -" to skysmart and then rerun the script. i'd like to avoid this.
so, if this script is run as root, i want it to automatically "sudo su -" to "skysmart", and then run. without any further intervention from the user.
I would like to create a script that logs into a list of several servers 50+ and changes my password all at once.
Every 60 days we are required to login to each system and change our passwords or else they expire and our login account is deleted.
I have an idea on how I could do this but... (4 Replies)
hi,
my problem is that i am calling a script from my perl program.
the script checks wether a particular process is running or not if the process is not running then it should start the process.
the problem here is that the front end logs into backend with a user which does not have the... (0 Replies)
Hi all,
I am trying to eject the cdrom from a livecd after certain stage...
Now assuming that it is possible to eject,please consider my issue!!!
The OS boots into a regular user by default...so i am unable to use the eject command to push out the drive...
However if i try pfexec eject it... (3 Replies)
Hi,
I need to login into remote server and execute a shell script over there.
As of now i am making use of ssh command
ssh primUser@135.254.242.2 sh /poll.sh
I am logging in as primUser but unless i change the user to root the script execution on the remote machine is not possible.
... (5 Replies)
I am trying to write a script to change passwords for the same user on multiple servers.
My environment runs purely ssh / scp not rsh / rcp and therefore coping using rcp is not an option.
I have been playing with expect to perform tasks but think there must be a better way.
Has anyone got... (7 Replies)
Hello there!
I need help:
I have this script:
#!/bin/bash
#chage to root user
sudo su
#Insert actual date
echo -n "Ingrese fecha actual: "
#Read the actual date
read fecha
#clean RAM memory
sync ; echo 3 > /proc/sys/vm/drop_caches ; swapoff -a && swapon -a
#backup opennms... (2 Replies)
Hi Experts,
I had tried to executes this script to change the user password through script:
No lines in buffer
#!/bin/ksh
cat /etc/passwd | grep -v userid >> /tmp/pass.tmp1
cat /etc/passwd | grep userid >> /tmp/pass.tmp2
PASS1=`cat /tmp/pass.tmp2 | cut -d ":" -f2`
PASS2=`q2w3e4r5`
sed... (3 Replies)
Hi,
I want to change the password of unix users on a number of servers.My plan was to ssh to all the servers in a shell script and use the passwd command. I tried to do so but everytime i run it i get this error.
ssh -x -n -l user1 host passwd
Changing password for "user1"
3004-709 Error... (3 Replies)
Dear Forum,
In our organization 100 user is existing. Now i want to change password for 100 user in linux server. Pls help to write script for changing password.
Regads//
Taifur (3 Replies)
Discussion started by: taifurakhand
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)