-f 

Use the command without allowing it to print error messages even if the operation fails to change the owner. 

-i 

Prompt for confirmation before the owner of a file or directory changes. 

-R 

Change the owner of a directory and all files and directories under that directory, and change the shadow file information on each affected file or directory. 

owner 

Specify the new owner. 

file 

Specify the file. 

dir 

Specify the directory.