ownership and file permission are different thing in linux

 Difference between ownership and file permission

Ownership:

It's related to who own a specific file, for example if your username is "name" then you will find that most files in your home directory will be owned by "name" user which is you.

File Permission:

It's basically what the owner or other user can do with the file, like if they can read, write or execute a specific file.

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