What is the difference between read execute and read

So, for the above directory B, the permissions are as follows user — read, write and execute rwx group — read and write rw- others — only read r—.

Read: Read permission for a file means that you can view the contents of a file. View the figure below. Next, using chmod command, read permission is denied. Write : Write permission for a file means that one can modify the contents of the file i. To check how it works follow the same steps as above: 1. You will be able to do so 2. Again try to modify the content. This time it will through an error when you will try to save the file. This permission makes sense only to files which can be executed, for example, shell scripts, C language object files file that you get after compiling a C program etc.

Watch the video below to see a demonstration for the same. For example: User 1 buys a ticket from an online website, and wants to view the ticket as a jpeg , which is displayed on the website.

If the user permissions is set to "read only," that means the user CAN access the file via an action on the website in this case, an image of their purchased ticket , but cannot access the file via direct url link right? Such as, www. As for security, this permissions are only an issue when your server is accessible by other not from your team users and this was mainly happening when people where using hosting services where they were not getting dedicated operating system but there was one operating system and all the users where uploading their data there.

So if not correctly secured, they could view and edit each others source codes. Today as usual you get dedicated server, with more security tools and operating system which is accessible only by you and no one else virtualization. So you don't need to worry that someone will view or change your data as you are the only one who has access to that server. The webserver apache, nginx, Also, the Linux file permission is given from the machine itself - here, the user will be the user running the webserver instance - usually a linux user named like "www-data".

So it does not have anything related to your website's user. For more information what are the perfect file and directory permission for your websites? Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 3 years, 10 months ago. Browse All iPhone Articles Browse All Mac Articles Do I need one? Browse All Android Articles Browse All Smart Home Articles Customize the Taskbar in Windows Browse All Microsoft Office Articles What Is svchost.

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