Linux Night brought to you by

1. Linux Night brought to you by

2. Why are you here? • Hopefully to learn • I do not claim to be a Linux expert one bit.. • I wish • I am here to inspire you to broaden your horizons • I want you to feel familiar with Linux so you hopefully write some “free” code • What you should learn? Absolutely Nothing! Unless you go outside of this room.

3. Who has only used Windows? • Why? (hint: Your parents) • Windows has Market share

4. Which Linux is right for me?

5. Brief History of Unix

6. History of Linux • Linux History Chart: http://www.levenez.com/unix/unix.pdf • LinusTorvalds October 1991 • The Unix operating system was conceived and implemented in 1969 at AT&T's Bell Laboratories in the United States by Ken Thompson, Dennis Ritchie, Douglas McIlroy, and Joe Ossanna. • The GNU project, started in 1983 by Richard Stallman wanted a free version of Unix (Bell Labs)

7. Why make the switch to linux? • Linux is Free • Software repositories • Live CDs/USB’s • Community support/non commercial • more than 90% of today's 500 fastest supercomputers run some variant of Linux,[16] including the 10 fastest.

8. Linux is Free • Companies license the software to businesses and sell their support for a fee so the desktop versions are free (Canonical, Red Hat) • Open source, anyone can rewrite the kernel if you are so inclined

9. Software repositories • -All “safe” software has been added. • Debian, Ubuntu, Other APT based systems:sudo apt-get install <whatever you want> • Fedora, SUSE, Mandriva, RHEL, Other RPM based systems: yum install <whatever you want> • Installing, updating and removing software in Linux is typically done through the use of package managers such as the Synaptic Package Manager, PackageKit, and Yum Extender

11. How I got eclipse

12. How do I get stuff I can’t find in the software center?

13. Live CD’s/USB’s • Boot straight from a CD or USB drive • Take it anywhere and still have all of your features • Drivers are supported directly at the kernel level so it is incredibly portable • Can even be installed simultaneously with other installations

14. Community support/non-commercial • Lots of software developers across the world use it and they will help you with your problems • There isn’t a commercial deadline or politics to get in the way of releasing • You can use any combinations of software you like • It is naturally more secure than Windows and because it is less mainstream people do not target the OS as much • All of the software in the repo is verified prior to being made available

15. Customizable • Any Distro • Any Layout • Tons of software to choose from • Multiple Desktops • Blah blahblah

16. Terms I couldn’t slip in anywhere else… • GCC (GNU Compiler Collection) • GNU GRUB (Grand Unified Bootloader) • Wine (WINdowsEmulator or Wine Is Not an Emulator)

17. Referencegasm • https://www.cfa.harvard.edu/~jbattat/computer/linuxReferenceCard.pdf • http://files.fosswire.com/2007/08/fwunixref.pdf • http://www.perpetualpc.net/srtd_commands_rev.html

18. Eclipse (Netbeans) • IDE (Integrated Development Environment) • Reduces dependency on command line tools • http://www.codeproject.com/Articles/14222/C-Development-using-eclipse-IDE-Starters-guide

19. Setting Up Wrong!!!

20. Need the Dev tools… Help->Check For Updates Help->Install New Software

21. Then we can make a fancy Project

22. Main.cpp • #include <iostream> • #include "mine.h" • int main() • { • intmyint = 1; • for (int i = 0; i <100; i++) • { • myint = i + myint * 2; • std::cout << myint << " "; • } • mine newObject; • std::cout << std::endl << newObject.getSome(); • std::cout << " MyInt = " << newObject.getmyint(); • std::cout << " Increment Ret Val = " << newObject.increment(5); • std::cout << " MyInt2 = "<< newObject.getmyint(); • return 0; • }

23. Mine.h void helloWorld() { std::cout << "Hello World"; } int increment(intincVal) { myint += incVal; return (myint); } std::string getSome() { return caos; } intgetmyint() { return myint; } }; • #pragma once • #include <string> • #include <iostream> • class mine • { • private: • intmyint; • std::string caos; • public: • mine() • { • myint = 0; • caos = "start some"; • }

24. Eclipse Generated makefile -include ../makefile.defs # Add inputs and outputs from these tool invocations to the build variables # All Target all: MyProject # Tool invocations MyProject: $(OBJS) $(USER_OBJS) @echo 'Building target: $@' @echo 'Invoking: GCC C++ Linker' g++ -o"MyProject" $(OBJS) $(USER_OBJS) $(LIBS) @echo 'Finished building target: $@' @echo ' ' # Other Targets clean: -$(RM) $(OBJS)$(C++_DEPS)$(C_DEPS)$(CC_DEPS)$(CPP_DEPS)$(EXECUTABLES)$(CXX_DEPS)$(C_UPPER_DEPS) MyProject -@echo ' ' .PHONY: all clean dependents .SECONDARY: -include ../makefile.targets • ######################################### • # Automatically-generated file. Do not edit! • ############################################ • -include ../makefile.init • RM := rm -rf • # All of the sources participating in the build are defined here • -include sources.mk • -include subdir.mk • -include objects.mk • ifneq ($(MAKECMDGOALS),clean) • ifneq ($(strip $(C++_DEPS)),) • -include $(C++_DEPS) • endif • ifneq ($(strip $(C_DEPS)),) • -include $(C_DEPS) • endif • ifneq ($(strip $(CC_DEPS)),) • -include $(CC_DEPS) • endif • ifneq ($(strip $(CPP_DEPS)),) • -include $(CPP_DEPS) • endif • ifneq ($(strip $(CXX_DEPS)),) • -include $(CXX_DEPS) • endif • ifneq ($(strip $(C_UPPER_DEPS)),) • -include $(C_UPPER_DEPS) • endif • endif

25. My Makefile • all: g++ main.cpp -o main • It can get much more complicated and if you were doing anything non-trivial it should get more complicated • Need a resource?http://mrbook.org/tutorials/make/

26. Make • In software development, Make is a utility that automatically builds executable programs and libraries from source code by reading files called makefiles which specify how to derive the target program. 

27. Directory Structure Reference