Hello World
#!/usr/bin/ruby
puts "Hello World!"
What is your name?
#!/usr/bin/ruby
print "What is your name? "
name = gets
puts "Your name is #{name}"
Read a file
#!/usr/bin/ruby
puts "What file do you want to read? "
Filename = gets
Filename.delete!("\n")
TheFile = File.read( Filename )
puts TheFile.to_s
Write in a file
#!/usr/bin/ruby
puts "write"
VarFile = File.new("dat.txt", "w+")
VarFile.puts "das erste "
VarFile.puts "das zweite"
VarFile.close
IF Statement
#!/usr/bin/ruby
puts "Number?: "
x = gets
if x.to_i > 2
puts "x is greater than 2"
elsif x.to_i <= 2 and x.to_i != 0
puts "x is 1"
else
puts "I can't guess the number"
end