Solved

Linux, su and sudo

Posted on 2013-12-26
2
754 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 500 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

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Install Dell OpenManage on Ubuntu PowerEdge R410 3 44
Backup & Restore 3 47
Help on running oracle SQL script in linux 3 37
wipe a usb using python 5 30
This is the error message I got (CODE) Error caused by incompatible libmp3lame 3.98-2 with ffmpeg I've googled this error message and found out sometimes it attaches this note "can be treated with downgrade libmp3lame to version 3.97 or 3.98" …
rdate is a Linux command and the network time protocol for immediate date and time setup from another machine. The clocks are synchronized by entering rdate with the -s switch (command without switch just checks the time but does not set anything). …
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

861 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

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now