Redirect the "puts" command output to a log file

ruby daemon
Josh Moore picture Josh Moore · Oct 22, 2008 · Viewed 23.6k times · Source

I am working on creating a daemon in Ruby using the daemons gem. I want to add output from the daemon into a log file. I am wondering what is the easiest way to redirect puts from the console to a log file.

Answer

Eric Walker picture Eric Walker · Mar 19, 2010

If you need to capture both STDERR and STDOUT and don't want to resort to logging, following is a simple solution adapted from this post: 

$stdout.reopen("my.log", "w")
$stdout.sync = true
$stderr.reopen($stdout)

Related questions

Make a Ruby program a daemon?

I want to write a Ruby program that will always be running in the background (a daemon) on my Mac. Can someone point me in the right direction on how this would be done?

Read More
Run Sidekiq as daemon on Ubuntu

How can I run sidekiq as daemon on Ubuntu? If I run bundle exec sidekiq -D I get invalid option: -D, is there any way to run it without some other controller, like god, upstart...?

Read More
How to check if a value exists in an array in Ruby

I have a value 'Dog' and an array ['Cat', 'Dog', 'Bird']. How do I check if it exists in the array without looping through it? Is there a simple way of checking if the value exists, nothing more?

Read More