Programming :: Root Commands In SSH Script
Mar 1, 2011
I am trying to administer a small group of ubuntu desktops in my classroom. I can use ssh to perform administrative tasks one at a time on each machine, but I want to automate these tasks through a small number of scripts. I am having trouble with running root commands through a script.
On other distros, I think I would simply ssh into the root account, and run the script. But as an ubuntu user, I have only ever used sudo, and folks at ubuntuforums are understandably hesitant to recommend logging in as root. Instead I am seeing suggestions to disable the password requirement for each specific command I want to run, which does not seem like best practice.
Should I enable the root account, give it a password, and ssh to the root account to run the scripts? To be specific, the scripts will do things like install updates, install programs, add or delete users, configure the desktop, etc.
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Mar 4, 2010
I need to launch a bash file in Linux from an unprivileged user session, file that will run bash commands as root. But I do not want to create an user with root privileges to do that also the process must be silent (no password asked).
How can I do this without adding a user in sudoers and without giving rights to all users to execute the commands from that bash file?
I have tried SUID option witch would had been good as functionality but I understand that SUID doesn't work for script bash files.
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Aug 11, 2010
I want to get a of log all the commands executed by the root user with the following details :
incoming ip
username (thru which su was executed)
time and date
all the commands executed as mentioned above.
Also if user has managed to login as root, he should not be able to disable / delete the above info. Can this info be collected at some other physical server ?
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Apr 4, 2016
I use two separate systems both running Debian 8. On one (my main) I can't do some commands including ping, shutdown and reboot without running them as root user, however on my other system I can ping and reboot as a non-privileged user. The permissions on both systems are the same for /bin/ping and /sbin/systemctl (reboot). I thought at first it was something to do with what groups my main was in, but that doesn't seem to be the gase.
I know I can fix it by setting setuid for both, but my question is why is it different on both machines? Is there a global setting controlling this in /etc or perhaps an icmp setting?
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Mar 3, 2010
I need to launch a bash file in Linux from an unprivileged user session, file that will run bash commands as root. But I do not want to create an user with root privileges to do that.
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Oct 25, 2010
How would like to allow a user to run command such as mount fdisk and lspci which normally you would have to be root to do. How would i go about doing this.
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Oct 14, 2010
I have this project and it needs me to write a programe that will interface with a hardware device thruogh the parallelport.I did that, but I feel i might be using the wrong commands because when runing it i get a segmentation fault or a 'changing ownership of file ; operation not permitted.
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Jun 10, 2009
Senario is we have a system where root has authorised keys set up so that it can do a passwordless ssh to $WORKSTATION. I then need to run a script on $WORKSTATION as user "bob" and NOT as user "root". I do not want to set up user "bob" to be allowed passwordless ssh so any ideas how I can do this?I have tried variations of (as user "root"):ssh $WORKSTATION "su - bob; ./my_script"
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Nov 7, 2009
After a few hours work I have managed to set up pptd so that my daughter can log into her account at Imperial College. My problem now is that I need to have a script that she can run if she wants to log in. She will have to invoke a couple of root commands and I do not want to give her the root password What she needs to do to set up networking is:
Quote:
pppd call imperial dump debug logfd 2 nodetach require-mppe
/sbin/ip route add default dev ppp0
How can I enable things so that she can run this script as user?
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Feb 22, 2011
In order to allow me to shutdown my PC from within fluxbox without being root I ran "visudo" and added the following line:
Code:
psionl0 ALL=(ALL) NOPASSWD: ALL
A check that the line had been accepted showed all ok:
Code:
bash-4.1$ sudo -l
User psionl0 may run the following commands on this host:
(ALL) NOPASSWD: ALL
Yet when I tested it out, I got nowhere:
Code:
bash-4.1$ sudo pkgtool
sudo: pkgtool: command not found
bash-4.1$ sudo shutdown -h now
sudo: shutdown: command not found
bash-4.1$
Have I done something wrong or isn't sudo meant to be used this way?
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Oct 14, 2009
How to allow access to some commands having root privleges to be run by non root user. I am new to unix/linux and I have a major assignment. I have to find ways to run particular commands which can be run only by root from a non root user. I know sudo is one of the way but i need some different approach.
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Jul 15, 2009
I've setup dimdim (opensource, centos 5.3) and noticed yum & rpm commands fail when executed as root because it uses librpmio from openoffice3 instead of /usr/lib (I'm running from memory so I may have misstyped). But sudo doesn't have this problem.
How can root's search path be different, especially after I state /usr & /usr/lib at the top of /etc/ld.so.conf.
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Jun 26, 2010
php. I am developing a web-interface for an application that sometimes needs root privs. Editting /etc/sudoers is not an option since the web interface needs to be portable to other users when they install my application. Is there any workaround ?PHP Code:
php code:$command = "./script.sh /dev/$DISKNAME &";$shellOutput = shell_exec($command);
Code:
[code]...
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Jan 27, 2011
I am a linux newbie. I have a situation where I need to send a command line -X command to a screen session owned by root from a nonprivliged account. The command is executed by a shell script, which in turn is executed from a PHP script. Is there a way to make this work?
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Jun 13, 2010
Accidently ran rm -rf while the pwd was /home/user-name
Now I'm unable to run any command whatsoever as root, ls,vi,cnf whatever, they don't work.
However the commands work as normal user.
I can guess that the files with root ownership in the home folder were deleted but I would like to revert everything back to normal and would like to know how to solve this problem.
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Jul 21, 2011
I need to use Live Media to make changes to a hard disk drive. I tried to sudo to no effect.
Seems like it would be troublesome to authorize root access on Live Media or have sudo allow commands such as pvcreate,lvcreate,vgcreate, especially if the hard disk is not encrypted.
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Aug 22, 2010
I'm connected to the internet using a wireless router. Each time I boot, I have to grant root privileges and type in a shell: iwconfig wlan0 essid linksys key dhclient wlan0 Isn't there a file(or location) that I can modify to automatically grant root privileges and execute these commands when debian starts? Something like autoexec.bat in windows.
Something else I'd like to mention is when I execute iwconfig.... for the first time, I get this incomplete result:
IEEE 802.11bg ESSID:"linksys"
Mode:Managed Access Point: Not-Associated Tx-Power=27 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key***********
Power Management:off
[Code]...
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Sep 9, 2010
I need a way to find all the files not owned by root:root on the commandline. How can this be done?
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May 17, 2010
How can i get full command as and when a partially finish typing in Linux Command prompt. or is there a way i can get the command from history of commands executed automatically when i type instead of opening history and looking for the command?
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Nov 14, 2010
I've tried instralling the c and c++ compilers on my fedora 13 machine and none of them seem to work. For example. i have this extremely simple c program that i try to compile and nothing works.
Code:
#include "stdio.h"
printf("Hello World");
[Code]....
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Nov 1, 2010
I've written a for loop with a counter i and I want to use the value of i within sed to edit certain lines of text within a fortran file.I want the the x=10 will be replaced by x =1(counter from the loop).. and so on.But from the following code my x = 10 is replacing by x = i.So
I am getting error.
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Jun 4, 2010
With the command "tail -300 /var/log/apache2/access.log | less" i can look in the log for the 300 latest visitors from my logfile. and i wanted to ask if it's possiblle to get that command to run from a php file and if yes how ?? how i run system commands in php? i use debian if it matters.
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Feb 27, 2011
I'm learning GTK , and would like to use Codeblocks, and/or KDEvelop, and compile my c files using that, but always get an error about gtk/gtk.h not found, but can't figure out how to add the commands... I normally type gcc -o Program1 main.c `pkg-config --libs --cflags gtk+-2.0` That's a lot to type every time to compile.. Isn't there an easier way, in KDevelop, Monodevelop, and/or Codeblocks to make this step quicker, by adding some sort of I-/usr/include commands, or something?? thanks in advance, =). I looked online for some results, but didn't come across anything handy..
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Apr 25, 2010
want to set more text files. They have "tab" differently (3, 4, 6 or 5 characters space).I have to use "sed" or "awk" sette them in the same tab (for example five space haracters).
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Jan 13, 2011
I am executing a run command in a script after that i need to copy files into a directory which are the inputs for the run,on run a new shell is created and the remaining commands in the script does not execute,wot should i do to execute the remaining commands in the script??
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Jun 10, 2010
Anyone know how to execute SQLite db commands from C++?
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Jul 11, 2011
For example, in GDB we talk about breakpoints, watchpoints and core dumps etc. Similarly what are the 'must knows' in Valgrind?
P.S. I don't need any links to Valgrind manuals, I already have them.
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Dec 27, 2009
Code:
find . -name *.txt
Code:
find . -name *.txt
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Feb 21, 2011
Where are the other BASH commands/exe stored? If the commands are part of the exe of BASH than ls would not be in a path, correct?
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May 5, 2010
Which is faster:
fread(&buf, 1, 1024, fp);
or
fread(&buf, 1024, 1, fp);
[code]...
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