Mentor's Corner-Collaborating within Linux

Hi there:
Last time, we talked about uncommon features in Linux, specifically extended attributes for files. Now, let's talk about ways to collaborate using Linux files and directories.
Example Use Case
There is a new project team who wants to use a Linux system for maintaining documents, code and executables for their project, Project Rhino. The Project Manager, Sally, comes to you requesting a "project" directory out in /home, called "rhino" for the project to use. Sally also asked for a new group, also called "rhino" with the members of the team in that new group, and you set both up for Sally.
For security, Sally wants the /home/rhino directory protected, so you set the directory to be owned by Sally, group-owned by "rhino," and not accessible by others. The permissions are initially set to mode 770. Ideally, Sally wants all files and directories created under /home/rhino also to be group-owned by the project group, "rhino." You know that the setgid bit on directories will make it so that newly created files and directories will automatically inherit the group-owner of that directory, so you then turn on the setgid bit on /home/rhino (using the chmod command). For maximum security, you also have the Project Rhino members set their umask to 007 so that those new files/directories are group-writable (so that others can modify files that project members created) and "others" permissions are totally turned off.
All Set, Until…
Bob from marketing is not in the Rhino group but needs access to some files (i.e. product descriptions). How can we give Bob access to only the few files he may need access to?
Linux Feature - ACLs
Let's turn to another uncommon feature in Linux: file access control lists, or ACLs (usually pronounced as "ackles"). Two commands are used to maintain ACLs: setfacl and getfacl (refer to the manual pages for details). ACLs allow you to grant read, write and execute permissions to individual users or entire groups to individual files and directories. Using ACLs, we can allow Bob the limited access he needs.
There is so much to learn! Keep going; I know you can do it!
Regards,
Kevin--IT Professional Program Mentor
[email protected]
Categories
- All Categories
- 50 LFX Mentorship
- 103 LFX Mentorship: Linux Kernel
- 575 Linux Foundation IT Professional Programs
- 304 Cloud Engineer IT Professional Program
- 125 Advanced Cloud Engineer IT Professional Program
- 53 DevOps Engineer IT Professional Program
- 60 Cloud Native Developer IT Professional Program
- 5 Express Training Courses
- 5 Express Courses - Discussion Forum
- 2K Training Courses
- 19 LFC110 Class Forum
- 7 LFC131 Class Forum
- 27 LFD102 Class Forum
- 156 LFD103 Class Forum
- 20 LFD121 Class Forum
- 1 LFD137 Class Forum
- 61 LFD201 Class Forum
- 1 LFD210 Class Forum
- LFD210-CN Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- LFD237 Class Forum
- 23 LFD254 Class Forum
- 611 LFD259 Class Forum
- 105 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 1 LFD273 Class Forum
- 2 LFS145 Class Forum
- 24 LFS200 Class Forum
- 739 LFS201 Class Forum
- 1 LFS201-JP クラス フォーラム
- 10 LFS203 Class Forum
- 75 LFS207 Class Forum
- 300 LFS211 Class Forum
- 54 LFS216 Class Forum
- 47 LFS241 Class Forum
- 41 LFS242 Class Forum
- 37 LFS243 Class Forum
- 11 LFS244 Class Forum
- 34 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 140 LFS253 Class Forum
- LFS254 Class Forum
- 1.1K LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 93 LFS260 Class Forum
- 132 LFS261 Class Forum
- 33 LFS262 Class Forum
- 80 LFS263 Class Forum
- 15 LFS264 Class Forum
- 11 LFS266 Class Forum
- 18 LFS267 Class Forum
- 17 LFS268 Class Forum
- 23 LFS269 Class Forum
- 203 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- LFS274 Class Forum
- LFS281 Class Forum
- 233 LFW211 Class Forum
- 172 LFW212 Class Forum
- 7 SKF100 Class Forum
- SKF200 Class Forum
- 902 Hardware
- 219 Drivers
- 74 I/O Devices
- 44 Monitors
- 115 Multimedia
- 209 Networking
- 101 Printers & Scanners
- 85 Storage
- 763 Linux Distributions
- 88 Debian
- 66 Fedora
- 15 Linux Mint
- 13 Mageia
- 24 openSUSE
- 142 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 357 Ubuntu
- 479 Linux System Administration
- 41 Cloud Computing
- 70 Command Line/Scripting
- Github systems admin projects
- 95 Linux Security
- 78 Network Management
- 108 System Management
- 49 Web Management
- 68 Mobile Computing
- 23 Android
- 30 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 537 Off Topic
- 131 Introductions
- 217 Small Talk
- 21 Study Material
- 826 Programming and Development
- 278 Kernel Development
- 514 Software Development
- 928 Software
- 260 Applications
- 184 Command Line
- 3 Compiling/Installing
- 76 Games
- 316 Installation
- 62 All In Program
- 62 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)