variant 1 (works)

task2_v1.rb

doc = ARGV[0]
print "[search]> "
search = gets.chomp
if doc
	if File.exist?(doc)
		file = File.open(doc)
	else
		puts "no such file"
	end
else
	file = File.open("movies.txt")
end	

file.readlines.each{|line| 
	line = line.split("|") 
	if line[1].include?(search)
		puts line[1]
		puts "*" * (line[7].to_f * 10 - 80).to_i
	end
	}
file.close