I believe the answer would be the JPEG file extension.
The programs you need for you are not even done yet
The World Wide Web Consortium, which <span>is an international community where organizations, employees</span><span> and the general public work together to develop Web standards.</span>
The closest line to that would be the first line:
#!/bin/bash
echo "Hello World!"
BTW, the "#!" is referred to as a she-bang. When those are the first characters executed, the (requires an absolute path) program that follows is launched, and the rest of this file is given to it as data. To run this like a program, the execute permissions need to be set ( chmod 0755 script.sh ).
