<% begin %>
<% file_path = File.join Tailog.log_path, params[:file] %>
<% File.open file_path do |file| %>
<% file_size = file.size %>
<% file.seek params[:seek].to_i %>
<% file.each_line do |line| %>
<%= h line %>
<% end %>
<% end %>
<% rescue => error %>
<%= h error.message %>
<% end %>