What is this "Do_Not_Upload" Folder?

[Abhik]

In my download pack, I got a folder called "Do_Not_Upload" and this folder contains three files, searchshell.php, tools.php and vb_backup.sh

I wonder what these files do?
Can anyone explain my what can I do with these? and how to do that?

I am totally new to this vBulletin software and really need some advise.

Regards
Abhik

[StrongMotive]

Tools can be used to uploaded to admincp directory to fix things.. that are mainly aids which don't ever need to be uploaded

[Abhik]

and those other two files?

[Wayne Luke]

searchshell.php is used to rebuild the builtin vBulletin search index from the command line. It is pretty much deprecated because the large forums that needed it are either using Fulltext or Sphinx search these days.

vb_backup.sh is a Linux/Unix shell script that allows you to perform backups of your forums from the command line.