(no options) 

Behave as if you specified the -f option.

-f 

Conduct a move without asking for confirmation even when overwriting an existing file or directory. If you specify both the -f and the -i options, the -f option overrides the -i option.

-i 

Prompt for confirmation before overwriting an existing target file or directory. If you specify both the -i and the -f options, the -f option overrides the -i option.

file1

Specify a source file to move.  

file2

Specify a destination file or new file name. 

file

Specify a source file to move. 

dir2

Specify a destination directory or new directory name to which the source file or directory can move. 

dir1

Specify a source directory to move to a destination directory.