box-o-sand/ex16-ec.rb

31 lines
631 B
Ruby

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