Table of Contents CHAPTER 1: WELCOME TO LINUX AND MACOS PART I: THE LINUX AND MACOS OPERATING SYSTEMS CHAPTER 2: GETTING STARTED CHAPTER 3: THE UTILITIES CHAPTER 4: THE FILESYSTEM CHAPTER 5: THE SHELL PART II: THE EDITORS CHAPTER 6: THE VIM EDITOR CHAPTER 7: THE EMACS EDITOR PART III: THE SHELLS CHAPTER 8: THE BOURNE AGAIN SHELL (bash) CHAPTER 9: THE TC SHELL (tcsh) PART IV: PROGRAMMING TOOLS CHAPTER 10: PROGRAMMING THE BOURNE AGAIN SHELL (bash) CHAPTER 11: THE PERL SCRIPTING LANGUAGE CHAPTER 12: THE PYTHON PROGRAMMING LANGU AGE CHAPTER 13: THE MARIADB SQL DATABASE MANAGEMENT SYSTEM CHAPTER 14: THE AWK PATTERN PROCESSING LANGUAGE CHAPTER 15: THE SED EDITOR PART V: SECURE NETWORK UTILITIES CHAPTER 16: THE RSYNC SECURE COPY UTILITY CHAPTER 17: THE OPENSSH SECURE COMMUNICATION UTILITIES PART VI: COMMAND REFERENCE PART VII: APPENDIXES APPENDIX A: REGULAR EXPRESSIONS APPENDIX B: HELP APPENDIX C: Keeping the System Up-to-Date APPENDIX D: MACOS NOTES