Part 1. Multiple Websites on VPS or EC2 AWS via Nginx PHP Linux - Users Groups and File Permissions
In this video, we are explaining the Users, Groups and File Permissions. We are using Amazon Linux AMI in Amazon Web Services to show you working of the commands. But these commands will work almost every linux distribution and even with some shells on MAC, Windows and other operating systems.
Before you start, it is good to have basic knowledge about AWS by watching our video "How to setup your own Linux server in AWS cloud" here: • Configuring NGinX Web Server on Linux...
Let's start with the video
1. useradd ---- Adding new user in Linux
2. groupadd ---- Adding new group in Linux
3. usermod ---- Modify a user in Linux
4. groupmod ---- Modify a group in Linux
5. passwd ---- Changing password for user in Linux
6. userdel ---- deleting the user in Linux
A. /etc/passwd ----- User Information
B. /etc/group ----- Group information
C. /etc/shadow ----- Password for all users
File Permissions Table
7 ----- rwx
6 ---- rw
5 ----- r-x
4 ----- r--
3 ----- -wx
2 ---- -w
1 ----- --x
0 ----- ---
I. chmod ----- Change Mode
II. chown ----- Change Owner
1. FILE OWNERS --- newFile belongs to User2
2. FILE GROUP OWNERS ---- Group users are User1 and User2
3. OTHER USERS ---- ec2-user is other user
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