FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -chmod is a command in Linux and other Unix-like operating systems that allows to change the permissions (or access mode) of a file or directory.

Detailed explanation-2: -To remove world read permission from a file you would type chmod o-r [filename]. To remove group read and execute permission while adding the same permission to world you would type chmod g-rx, o+rx [filename]. To remove all permissions for group and world you would type chmod go= [filename].

Detailed explanation-3: -Permission Types Files and directories can have three types of permissions: read, write, and execute: Someone with read permission may read the contents of a file, or list the contents of a directory.

Detailed explanation-4: -The chmod command enables you to change the permissions on a file. You must be superuser or the owner of a file or directory to change its permissions.