Are you aware that user3 and user4 won't be able to list any files in the folder?
Main Topics
Browse All Topics
Loading Advertisement...
Question
How to give access permission for a folder for different users with different access rights in linux?
I want to give a access permission for 4 users for the same folder (Foler Name: source_code) with different access rights in linux.
I want to give access rights for a folder in GUI mode and in command line mode.
for user1 = read and execute
for user2 = read, write and execute.
for user3 = read only.
for user4 = read only.
Any Help?
This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.
Subscribe now for full access to Experts Exchange and get
Instant Access to this Solution
- Plus...
- 30 Day FREE access, no risk, no obligation
- Collaborate with the world's top tech experts
- Unlimited access to our exclusive solution database
- Never be left without tech help again
Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.
- "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
- "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
- "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.
See what Experts Exchange can do for you.
Got a question?
We've got the answer.
Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.
Need individual assistance?
Our experts are ready to help.
If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.
Want to learn from the best?
Read articles from industry experts.
Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.
Working on a long term project?
Store your work and research.
Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.
Access the answers to your technology questions today.
30-day free trial. Register in 60 seconds.
What Makes Experts Exchange Unique?
Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.
Trusted by the world's most respected brands.
Faithfully serving IT professionals since 1996.
Try it out and discover for yourself.
30-day free trial. Register in 60 seconds.
Free Tech Articles
-
WARNING: 5 Reasons why you should NEVER fix a computer for free.
It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
-
SCCM OSD Basic troubleshooting
SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
-
Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
-
Create a Win7 Gadget
This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
-
Outlook continually prompting for username and password
There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
-
Backup Exchange 2010 Information Store using Windows Backup
There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...
Cloud Class Webinars
- Avoiding Bugs in Microsoft Access
Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
- Top 10 Best New Features in Visio 2010
Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
- IT Consultant Business Secrets Revealed
Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
- Disaster Recovery and Business Continuity
Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
- Organize Your Visio Diagrams with Containers and Lists
Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
- How to Us Objects, Properties, Events and Methods in Microsoft Access
Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...
Join the Community
Give a Little. Get a Lot.
Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.
Answers
Well this requires acl
(access control list ) concept as we are using different access controls on a particular directory or folder:
1. mount the filesystem with acl parameter so that acls can be executed
mount -t ext3 -o acl devicename mountpoint/partition
2. make entry in fstab for persistance during boot times
eg. LABEL=/work /work ext3 acl 1 2
3. get the acl parameters to check from folder
getfacl foldername
4. set acl on it acc. to contitions above
setfacl -m u:user1:r-x foldername
setfacl -m u:user2:rwx foldername
setfacl -m u:user3:r-- foldername
setfacl -m u:user4:-- foldername
5. verify all by seeing all control contexts by
getfacl fodlername
follow above & lemm know if thrs still any issue with the above.
ACLs may still be needed (if you do not wish to tweak permissions of the parent directory), because it is implicit that there are user6, user7, and user8 may exist who should have no access at all. Granting world read access is probably unacceptable from a security standpoint.
The information must be confidential, and there may be other users of the system, otherwise "user3" and "user4" would not be listed as the only users that have read-only access.
There are two issues here:
* What permissions and ownerships to set on the folder
* What permissions and ownerships to set on files in the folder
It's actually not very useful to give a user "read" permission to a directory but not "execute".
The reason is without "execute" permission to a directory, you can't do anything with it.
In fact, you cannot CD into the directory or read any file from it without execute permission.
If you want to restrict the ability to execute a file, you have to use file permissions (not folder permissions)
With ACLs you _can_ set the default permissions for new files in the folder.
You can specify (for instance)
(First apply ACLs to the files)
setfacl -R -m group:firstgroup:rwx (foldername)
setfacl -R -m group:secondgroup:r-x (foldername)
setfacl -R -m group:thirdgroup:r-- (foldername)
(Then apply ACLs to the folder)
setfacl -m default:group:firstgroup:r
mask:---
group:firstgroup:rwx
group:secondgroup:r-x
group:thirdgroup:r-x
defaut:group:firstgroup:rw
default:group:secondgroup:
default:group:thirdgroup:r
'default' pertains to the initial permissions that new files get when you create them
3 Ways to Join
Business Accounts
- Perfect for organizations
- Multiple users
- Save over 36%
- Create a Business Account
Answer for Membership
- Earn free access
- Showcase your knowledge
- No credit card required
- Sign Up to Answer
Loading Advertisement...
by: BlazPosted on 2008-06-13 at 04:13:33ID: 21777631
File permisions in linux are for three groups of users: rights for the owner, rights for the group andrights for all users.
Your case can be easily implemented by this scheme if you say that ALL users have read access (and all users include user3 and user4).
So:
Chmod 754 *
Chown user2:user1group *
Provided that you have a group named user1group in which there is only the user user1.