filename = ARGV.first
script = $0

puts <<EOF
We're going to erase #{filename}.
If you don't want that, hit CTRL-C (^C).
If you do want that, hit RETURN.
EOF

print "? "
STDIN.gets

puts "Opening the file..."
target = File.open(filename, 'w')

puts "Truncating the file.  Goodbye!"
target.truncate(target.size)

puts "Now I'm going to ask you for three lines"

print "line 1: "; line1 = STDIN.gets.chomp
print "line 2: "; line2 = STDIN.gets.chomp
print "line 3: "; line3 = STDIN.gets.chomp

puts "I'm going to write these to the file."

target.write("#{line1}\n#{line2}\n#{line3}\n")

puts "And finally, we close it."
target.close