How do I read a file in Ruby?

How do I read a file in Ruby?

You can read a file in Ruby using the File.read method. For example: content = File.read('file.txt').

What if I want to read it line by line?

You can use File.foreach to read a file line by line. For example: File.foreach('file.txt') { |line| puts line }.

How can I handle exceptions while reading a file?

You can use a begin-rescue block to handle exceptions. For example:

begin
  content = File.read('file.txt')
rescue Errno::ENOENT
  puts 'File not found!'
end

Is there a way to write to a file in Ruby?

Yes, you can write to a file using File.write. For example: File.write('file.txt', 'Hello, World!').