Today, i wanted to write to write a program that would open a file and display line by line with numbers (like nl in linux). And with Ruby, i did it within 2 minutes( i am not joking but not surprised anyways.) I took just a one liner.

count = 0

File.open(“foo.txt”,”r”).each {|i| puts “#{count + =  1}  #{i.chomp}”}

Extended Version.

count = 0

File.open(“foo.txt”,”r”).each do |i|

puts “#{count += 1} #{i.chomp}”

end