[Webinar] Streamline your web hosting managementRegister Today

x
?
Solved

Linux, su and sudo

Posted on 2013-12-26
2
Medium Priority
?
845 Views
Last Modified: 2013-12-27
I am running RHEL 6.5

I want to use a single command that will switch user, and then start a program that is only available within that user's environment.

Normally I would use two commands

su - mqm

runmqsc AAA < test.mq

Open in new window


I want to use a single su or sudo command to both switch to mqm, and then start up a program.

How would I write such a command ?

Thanks
0
Comment
Question by:Los Angeles1
2 Comments
 
LVL 21

Expert Comment

by:Mazdajai
ID: 39740768
Try -
user /bin/su - mqm

Open in new window

You can substitute user with %groupname if you want to include a group.
0
 
LVL 68

Accepted Solution

by:
woolmilkporc earned 2000 total points
ID: 39740781
If you don't want to get asked for a password you must be root to use "su -" like this:

su - mqm -c "/path/to/runmqsc AAA < /path/to/test.mq"

The "-" flag preserves the environment.


As an authorized sudo user you can do:

sudo -u mqm  "/path/to/runmqsc AAA < /path/to/test.mq"

This requires an entry in sudoers for the user "userA" issuing the command like

userA   ALL=(mqm) NOPASSWD:/path/to/runmsgc

There are three possible methods to preserve the target user's environment:

First method: The option "Defaults env_reset" must not be specified or (with the newer sudo implementations where it's the default) must be negated in sudoers:
Defaults !env_reset

Alternatively, some sudo implementations support the "-i" (=initialize environment)  flag, so you can try:

sudo -u mqm  -i "/path/to/runmqsc AAA < /path/to/test.mq"

A third alternative (if supported): Use the "SETENV" tag and "-E"

userA   ALL=(mqm) NOPASSWD:SETENV:/path/to/runmsgc

sudo -u mqm -E "/path/to/runmqsc AAA < /path/to/test.mq"
0

Featured Post

Never miss a deadline with monday.com

The revolutionary project management tool is here!   Plan visually with a single glance and make sure your projects get done.

Question has a verified solution.

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

I have written articles previously comparing SARDU and YUMI.  I also included a couple of lines about Easy2boot (easy2boot.com).  I have now been using, and enjoying easy2boot as my sole multiboot utility for some years and realize that it deserves …
This installment of Make It Better gives Media Temple customers the latest news, plugins, and tutorials to make their Grid shared hosting experience that much smoother.
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial
Suggested Courses
Course of the Month7 days, 21 hours left to enroll

607 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