Playing with VT100 Codes

gistfile1.rb

# printf "\033[0mAll attributes off\033[0m\n"
# printf "\033[1mBold\033[0m\n"
# printf "\033[4mUnderline\033[0m\n"
# printf "\033[5mBlink\033[0m\n"
# printf "\033[8mHide\033[0m\n"
# printf "\033[30mBlack\033[0m\n"
# printf "\033[31mRed\033[0m\n"
# printf "\033[32mGreen\033[0m\n"
# printf "\033[33mYellow\033[0m\n"
# printf "\033[34mBlue\033[0m\n"
# printf "\033[35mMagenta\033[0m\n"
# printf "\033[36mCyan\033[0m\n"
# printf "\033[37mWhite\033[0m\n"
# printf "\033[40m\033[37mBlack Background\033[0m\n"
# printf "\033[41mRead Background\033[0m\n"
# printf "\033[42mGreen Background\033[0m\n"
# printf "\033[43mYellow Background\033[0m\n"
# printf "\033[44mBlue Background\033[0m\n"
# printf "\033[45mMagenta Background\033[0m\n"
# printf "\033[46mCyan Background\033[0m\n"
# printf "\033[47mWhite Background\033[0m\n"

system("clear")
symbols = ['|', '/', '-', '\\']
count = 0 

# [s saves the cursor position
#print "\033[s"
2.times do
  symbols.each do |sym|
    # [u unsave cursor (returns the cursor position
    #print "\033[u\033[1D"

    # Hide the cursor
    print "\033[?25l"
    # Sets the cursor position
    print "\033[20;20H"
    print "\033[34m#{sym}\033[0m"
    #print "\033[s\033[0;0f"
    STDOUT.flush
    sleep 0.5 
  end 
end
print "\033[u"