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Comprehensive Review of Linux, Unix, and C Programming for Technical Mastery

This session review covers the essentials of Linux and Unix systems, including the kernel, GNU utilities, and various Linux distributions. It discusses shell scripting with Bash, including variables, loops, and job control. Key technical topics include TCP/IP stack, RAID, permissions, and HTTP server setup using httpd. Additional programming insights include compiling C programs, creating Makefiles, and scripting in Awk and Perl. Gain a deep understanding of system architecture, configuration, and security practices like SSH and GPG for robust programming solutions.

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Comprehensive Review of Linux, Unix, and C Programming for Technical Mastery

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  1. C & Unix Final Session Review (… because I, too, can do PowerPoint …)

  2. Intro to Linux • Kernel (Linus Thorwal) + GNU Utilities = Linux • Un-certified Unix variation • Many distros with various highlights. E.g.: • Kernel + GNU Utils + X-Server + Gnome • Kernel + GNU Utils + X-Server + KDE • Closely related to C programming language • Text-file based configuration • TCP/IP stack build-in from early on

  3. Technical Details • RAID • Partitions • DHCP • Permissions and ownership

  4. Shell Scripting • Bourne-again shell bash • Variables • Loops • Conditionals • Pipes • Redirection • Job control

  5. Special Utilities • pico • more • grep • sort • uniq • tar • last, uptime, top, who (w) • tail, head • gzip, gunzip

  6. Installing a “tar-ball” • download “file.tar.gz” • unzip + untar • ./configure • make • make install • configure program options Our choice: “httpd”

  7. Web Server Configuration • httpd process owner • document root • index files and permissions • access rights • alias & redirect • password protected web page • CGI scripts • Script (grep) driven phone-book db with search • Httpd access log file

  8. C Programming • Simple C program • Compile and link C program • CGI script in C • Makefile • Makefile targets, dependencies, and commands • Makefile dummy targets • C program with complex numbers

  9. Encryption • SSH • Public/private key encryption • GPG • Cluster computing

  10. Other Programming Languages • Awk: BEGIN {init-action}<search pattern 1> {action 1}<search pattern 1> {action 1} …END {final-action} • Count how many times a user logged in • Perl: Swiss-Army Knife of Scripting Languagesscalarsarrays (lists + index)hashes • Program to count frequencies of words in a text file

  11. VM – Virtual Machine • VMware-player-2.0.3-80004.exe • Free VM player can execute VMs packaged for it • Ubuntu_710_VMware_EN-2.rar • User-friendly Linux distro with Gnome Desktop • 7z457.exe • FOSS compression/uncompress program • Setup and configure to your taste • See configuration document

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