1) The ls command shows your current directory, which contains the
web.tar archive. The tar tf command reveals that web.tar contains the project directory tree. If you extract files from web.tar, you will overwrite the existing project directory.
2) Since web.tar contains a backup version of your project, you create an old directory so that you can extract the archive to a different location
3) Using the mv command, you move web.tar to the old directory. You then cd to old and use it to verify that web.tar is there
4) The tar xvf command extracts files from web.tar. Each output line starts with z, for extract. The other information lists the file names and sizes, in bytes and blocks.
5) Tar Extract 5