This simple tool let’s you calculate the Linux file permissions in absolute mode and symbolic mode.
Just select the permissions that you want for your files and hit the Calculate button.
Once you have the file permissions in absolute or symbolic mode, you can use the chmod command to change the file permission. Refer to these chmod command examples if you are not familiar with this command.
Some details about the user, group and other you may need to know to clear your basics.
User is the owner of the file. When you create a file, you become the owner of the file. The ownership can be changed.
Every user is part of a certain group(s). A group consists of several users and this is one way to manage users in a multi-user environment.
Other can be considered as a super group with all the users on the system. Basically, anyone with access to the system belongs to this group.
I hope this nifty chmod calculator helped you to calculate the Linux file permissions easily.