Chown

The command , an abbreviation of ''change owner'', is used on Unix and Unix-like operating systems to change the owner of file system files and directories. Unprivileged (regular) users who wish to change the group membership of a file that they own may use .

The ownership of any file in the system may only be altered by a super-user. A user cannot ''give away'' ownership of a file, even when the user owns it. Similarly, only a member of a group can change a file's ''group ID'' to that group.

The command is available as a separate package for Microsoft Windows as part of the UnxUtils collection of native Win32 ports of common GNU Unix-like utilities. The command has also been ported to the IBM i operating system. Provided by Wikipedia