How to read lines of a file in Ruby

Question

I was trying to use the following code to read lines from a file. But when reading a file, the contents are all in one line:

line_num=0
File.open('xxx.txt').each do |line|
  print "#{line_num += 1} #{line}"
end

But this file prints each line separately.

---

I have to use stdin, like ruby my_prog.rb < file.txt, where I can't assume what the line-ending character is that the file uses. How can I handle it?

Answer 1

Ruby does have a method for this:

File.readlines('foo').each do |line|

http://ruby-doc.org/core-1.9.3/IO.html#method-c-readlines