//questions:


What is free software? List three characteristics of free software.
Why is Linux popular? Why is it popular in academia?
What are multiuser systems? Why are they successful?
What is the Free Software Foundation/GNU? Linux? Which parts of the Linux operating system did each provide? Who else has helped build and refine this operating system?
What is a utility program?
What is a shell? How does it work with the kernel? With the user?
How can you use utility programs and a shell to create your own applications?
Why is the Linux filesystem referred to as hierarchical?
What is the difference between a multiprocessor and a multiprocessing system?
Approximately how many people wrote Linux? Why is this unique?
What are the key terms of the GNU General Public License?


What i have:

1. Free software is software that users have the freedom to distribute and change. The three main characteristics of free software are: The source code has to be distributed with the program, you can not restrict people from redistributing/modifying/using the software, and users must be allowed to redistribute modified versions under the same terms/licensing.

2. Linux is popular for a number of different reasons. Its free software that is portable because its writen in C, has an amazing range of supported "peripherals", has a lot of software available, and has standardization (POSIX). Its generally popular in academia because its a free, open-source, portable, sophisticated programming environment that computer science students could use as a learning platform.

3. A multiuser system is an operating system that allows multiple users to access a single computer's resources. Its successful because its hard for a single user to use 100% of a modern computers resources, and allows for greater efficiency.

4. GNU stands for "GNU'S Not Unix", and it was designed to be a UNIX-like operating system developed by Richard Stallman. Linux is the name of operating system kernel developed by Linus Torvalds. GNU's tools aside the Linux kernel make the operating system known as “Linux” aka “GNU/Linux”. Thousands of people helped refine the operating system online.

5.