TOC: Ruby programming

• Introduction to Ruby
  1. Where to get Ruby
  2. Ruby on the command line
  3. irb - Interactive Ruby
  4. Hello world
  5. Ruby development environment
  6. Create variable and print content using puts
  7. Hello Foo using puts
  8. Hello Foo - print
  9. Ruby variable interpolation
  10. Hello Foo - puts with interpolation
  11. Hello Foo STDIN read
  12. Hello Foo STDIN and strip
  13. Hello Foo ARGV
  14. Interpolation with expression
  15. Ruby conditionals - if statement
  16. Ruby conditionals - if else statement
  17. Ruby path to current script
  18. Ruby command line arguments ARGV
  19. Variable Types in Ruby
  20. Resources
• Ruby Arrays
  1. Ruby Arrays intro
• Hashes
  1. Ruby empty Hash
  2. Ruby Hash add key-value pairs
  3. Ruby hash list keys
• Functions
  1. Why create functions?
  2. Hello World in a function
  3. Hello Person in a function
  4. Simple function
  5. Ruby Function with a star (asterisk)
  6. Function with a star example
  7. Ruby Function with two stars
• Filesystem
  1. Ruby makedir
  2. Ruby directory exists
  3. Ruby write to file
  4. Ruby append to file
  5. Ruby list files by using glob
• Time
  1. Ruby current time
  2. Ruby time string formating with strftime
• net/http
  1. API requests
  2. GET URL httpbin
  3. GET URL that does not exist (404 error)
  4. GET URL that pretends not to exist (404)
  5. GET URL that pretends to crash (500)
  6. Show request headers
  7. Get request headers using Firefox
  8. Get request headers using curl
  9. Set request headers
  10. Sending a POST request
  11. Setting header in POST request
  12. Debugging a failed request
  13. GET URL
• Other
  1. Ruby - Execute external command (system)
  2. Ruby - Execute external command (system) - failure