xampp file is on my desktop and i dont know what to write

[Lenetty]

my problem is xampp file is on my desktop and i dont know what to write instead of /opt.

[JonB]

That's OK - It probably won't run anyway.

You ARE on Linux machine, right??? (I ask as you have Win 7 as your OS in your profile)

You need to extract lampp into the /opt folder like the FAQ says...

Step 2: Installation
After downloading simply type in the following commands:

Go to a Linux shell and login as the system administrator root:

su

Extract the downloaded archive file to /opt:

tar xvfz xampp-linux-1.7.7.tar.gz -C /opt

Warning 2: already installed XAMPP versions get overwritten by this command.

That's all. XAMPP is now installed below the /opt/lampp directory.

Good Luck