heroku - how to see all the logs

Question

I have a small app on heroku. Whenever I want to see the logs I go to the command line and do

heroku logs 

That only shows me about 100 lines. Is there not a way to see complete logs for our application on heroku?

Answer 1

Update (thanks to dawmail333):

heroku logs -n 1500 

or, to tail the logs live

heroku logs -t  

Heroku log documentation

If you need more than a few thousand lines you can Use heroku's Syslog Drains

Alternatively (old method):

$ heroku run rails c File.open('log/production.log', 'r').each_line { |line| puts line } 

Answer 2

Logging has greatly improved in heroku!

$ heroku logs -n 500 

Better!

$ heroku logs --tail 

references: http://devcenter.heroku.com/articles/logging

UPDATED

These are no longer add-ons, but part of the default functionality :)