Describe how the mv command moves a file even though it doesn’t touch the data blocks belonging to the file.

What will be an ideal response?

The mv command merely alters the directory information about a particular file. A directory file
contains a pointer to the data blocks for each file in the directory. To move a file from dir1 to dir2,
mv removes the link to the data blocks from dir1 and inserts the pointer in dir2. The data blocks
themselves are never accessed.