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tsz:Desktop $ cat test
this
is
a
bunch
of
invalid
text
for
you
to
read
and
love
thanks

tsz:Desktop $ cat test.rb
#!/usr/bin/env ruby

IO.foreach("test") do | word |
  print "\rTrying: #{word}"

  if word.include? "love"
    puts "[+] Success: #{word}"
    break
  end
end

tsz:Desktop $ ./test.rb
Trying: this
Trying: is
Trying: a
Trying: bunch
Trying: of
Trying: invalid
Trying: text
Trying: for
Trying: you
Trying: to
Trying: read
Trying: and
Trying: love
[+] Success: love