?
Solved

script for execution root commands

Posted on 1998-10-23
10
Medium Priority
?
349 Views
Last Modified: 2011-10-03
I need execute the command "rdate" from an user application.
Perhaps, it's possible from a script??.
If anyone knows another method please help me!
0
Comment
Question by:elmister
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
10 Comments
 

Expert Comment

by:greggster
ID: 2007535
rdate can be run from a script, but it does require root privs to
run. Add the following lines to the script file:
/bin/rdate <hostname> (hostname is the name of the system that
has the correct time).

0
 

Author Comment

by:elmister
ID: 2007536
How is possible to login in as root from a script (root with password, of course) for execution of rdate?
P.D I know the root password, of course.
0
 
LVL 2

Expert Comment

by:ray_leach
ID: 2007537
It's a security risk, but try this :

Create your script to run rdate like this:
#! /usr/bin/ksh
# Change to root user
su -
#run rdate
/bin/rdate mypc

Create a second script like this:

#! /usr/bin/ksh
# Run your rdate script
/rdate.sh <<EOT
god    <-- This is your root password
EOT

0
Get real performance insights from real users

Key features:
- Total Pages Views and Load times
- Top Pages Viewed and Load Times
- Real Time Site Page Build Performance
- Users’ Browser and Platform Performance
- Geographic User Breakdown
- And more

 
LVL 51

Expert Comment

by:ahoffmann
ID: 2007538
You cannot rlogin from within a script, it always asks for passwd on stdin.
Why not using rsh?
0
 

Author Comment

by:elmister
ID: 2007539
It doesn't work
It always asks for passwd on stdin
0
 

Author Comment

by:elmister
ID: 2007540
Using rsh for rdate?
0
 
LVL 51

Expert Comment

by:ahoffmann
ID: 2007541
ray_leach suggestion didn't work on modern UNIX except you use a package called expect.

You may try to write a sucmd script as follows:

#! /bin/sh
$*
exit 0


then
chmod u+s sucmd
chown root sucmd

Running this script may be restricted on most UNIXs, you have to patch the kernel then to allow suid-root-scripts (which is more
or less simple, refer to your docs).
0
 
LVL 2

Expert Comment

by:kellyjj
ID: 2007542
If you are running on SCO,  then you can make that command a 'asroot ' command.  Essentially what that means is that there is a list of commands that can be ran regardless of the user.

for example:
/usr/bin/asroot shutdown -g0 -y -i6

this will for use in scripts. It is how I do it for most of our clients.
0
 

Author Comment

by:elmister
ID: 2007543
I Haven't asroot command
0
 
LVL 3

Accepted Solution

by:
mliberi earned 100 total points
ID: 2007544
Your problem is, more generally speaking:
"How may I run a shell script with super user authority?"

The problem is that, for security reasons, all unix operating systems (I think) do not allow SUID scripting.

I solved the problem by writing a shell script compiler that allows you to generate an executable starting from a shell script. It don't represent a security risk because the compiled code can't be easily viewed or changed, so you are sure that the user do only what your program does.

The method is simple:
1) create your shell script (e.g. xxx.sh)
2) compile it               (e.g. kcc xxx.sh)
   the compiler will produce the executable 'xxx'
3) change 'xxx' ownership   (e.g. chown root xxx)
4) set SUID bit             (e.g. chmod u+s xxx)

Any user that run 'xxx' program would become root for the time the process is running.
Avoid forking programs that allows starting a shell, it would be a root shell!

You can download kcx - the shell script compiler from the following URL:
http://www.geocities.com/SiliconValley/Horizon/5745/main.html

It has been compiled for AIX, SunOS, IRIX, Linux and Cygwin32
but could be easily compiled for any unix platform with an ANSI C compiler.

enjoy.
0

Featured Post

Want to be a Web Developer? Get Certified Today!

Enroll in the Certified Web Development Professional course package to learn HTML, Javascript, and PHP. Build a solid foundation to work toward your dream job!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I have been running these systems for a few years now and I am just very happy with them.   I just wanted to share the manual that I have created for upgrades and other things.  Oooh yes! FreeBSD makes me happy (as a server), no maintenance and I al…
Using libpcap/Jpcap to capture and send packets on Solaris version (10/11) Library used: 1.      Libpcap (http://www.tcpdump.org) Version 1.2 2.      Jpcap(http://netresearch.ics.uci.edu/kfujii/Jpcap/doc/index.html) Version 0.6 Prerequisite: 1.      GCC …
Learn how to find files with the shell using the find and locate commands. Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.:
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.
Suggested Courses
Course of the Month15 days, 9 hours left to enroll

741 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question