Changes to the 2016-6-20 file owner and owning group

Use chown root:root (left is the owning master you want to change: to the right is the owning group to change) 111(111 can be a file or a directory)

Chown-r represents recursion, indicating that if followed by a directory, all subdirectories under the directory or the child file's owner and owning group become the new owner and the group to which the command changed.

! represents a recent historical order from us (GCA!). LS stands for the last ls command we hit)

! You can also follow the history command's ID, the history command query

Changes to the 2016-6-20 file owner and owning group