mv (move)
mvfile1 file2 moves (or renames) file1 to file2
To move a file from one place to another, use the mv command. This has the effect of moving rather than copying the file, so you end up with only one file rather than two.
It can also be used to rename a file, by moving the file to the same directory, but giving it a different name.
We are now going to move the file science.txt to your backups directory (the directory inside unixstuff).
First, change directories to your unixstuff directory. Then, inside the unixstuff directory, type
mv science.txt backups/.
Type lsandls backups to see if it has worked.