• ls -l = Print files in a long listing format, you can see ownership and permissions of the file

Ownership:

• sudo chown [username]:[groupname] [filename] = Change ownership
• sudo chown tom:admin test.txt = Change ownership of 'test.txt' file to 'tom' and group 'admin'
• sudo chown admin test.txt = Change ownership of 'test.txt' 'admin' user
• sudo chgrp devops test.txt = Make 'devops' group owner of test.txt file

Possible File Permissions (Symbolic):

• • = regular file, or d = directory, or c = character device file, or I = symbolic link.
• r = Read
• w = Write
• x = Execute
• '-' = No permission

Change File Permissions for different owners

File Permissions can be changed for:

• u = Owner
• g = Group
• o = Other (all other users)

Minus (-) removes the permission

• sudo chmod -x api = Takes 'execute' permission away for 'api' folder from all owners
• sudo chmod g-w config.yaml = Takes 'write' permission away for 'config.yaml' file from the group