gistfile1.rb

#!/usr/bin/env ruby

t          = Time.now
logline    = (%x{/usr/bin/tail -n12 /var/log/php/api_error_log}).scan(/^\[.*/).last
lhour      = logline.match(/(\d{2}):/)[1].to_i
thour      = t.strftime("%H").to_i
day        = t.strftime("%d").to_i


if (lhour < (t.gmt_offset + 2) and thour > lhour)
  hour = lhour.to_i
  day  += 1
elsif (lhour > thour)
  hour = lhour.to_i
else
  hour = t.strftime("%H").to_i
end
if day < 10
  day = "0#{day}"
end


lines = [ ]
File.open('/var/log/php/api_error_log') do |fd|
  begin
    while (line = fd.readline)
      if line =~ /^\[#{day}-#{t.strftime("%b")}-#{t.year}\s+#{hour}:\d{2}:\d{2}\]/
        lines << line.chomp
      end
    end
  rescue EOFError
    fd.close
  end
end

puts lines