I usually don’t need development logs persisted after I’m done with a development session of a Rails app. Sometimes the development.log
file can balloon up to gigabytes if I forget to delete it. I found a way to delete this file after a Ruby on Rails application exits in development mode.
Deleting development.log on Every Exit
In config/environments/development.rb
, add the following:
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This code will delete development.log
after the Rails process exits.
For example, I can start up a Rails app locally and see that a development.log
file is created under log
/:
$ rails s
=> Booting Puma
=> Rails 7.0.4.3 application starting in development
=> Run `bin/rails server --help` for more startup options
Puma starting in single mode...
* Puma version: 6.0.0 (ruby 3.1.2-p20) ("Sunflower")
* Min threads: 5
* Max threads: 5
* Environment: development
* PID: 18528
* Listening on http://127.0.0.1:3000
* Listening on http://[::1]:3000
Use Ctrl-C to stop
And I can see the development.log
file under log/
:
$ ls -1 log/
bullet.log
development.log # here's the development log file
production.log
test.log
Now when I exit the rails
process, I should see a message saying “Deleting development.log…” and I should also see the development.log
file disappear:
^C- Gracefully stopping, waiting for requests to finish
=== puma shutdown: 2023-05-21 13:58:25 -0700 ===
- Goodbye!
Exiting
Deleting development.log...
The custom message is there. Now to verify that there is no development.log
file:
$ ls -1 log/
bullet.log
production.log
test.log
The development.log
file is now gone!
Deleting development.log if it Reaches a Certain File Size
Maybe you want to keep the development.log
file around unless it reaches a certain file size. If that’s the case, we can tweak what we previously added in config/environments/development.rb
:
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