This is a test page. It has no real use other than testing ERB. You can look at this page's source code.
3 + 2 = <%= 3 + 2 %>
Output of `uname`: <%= `uname` %>
`cowsay "<%= Time.now.to_s %>"`:
<%= `cowsay "#{Time.now.to_s}"` %>
An ASCII table:
<%= chars = "" output = "" (0..1).each do |x| output << ("\n %s | %s" % [x.to_s(16), ' ' * 32]) end (0x20..0xff).each do |x| chars << x end chars.split('').each_with_index do |x, i| if i % 16 == 0 output << ("\n %s | " % [((x.codepoints.first & 0xf0) >> 4).to_s(16)]) end output << x + ' ' end output << "\n +" + '-' * 32 + "\n " (0x0..0xf).each do |x| output << ("%s " % [x.to_s(16)]) end output %>