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 }