logger-example.rb

require 'logger'

# Example code for Ruby's Logger module
# http://ruby-doc.org/stdlib-2.3.0/libdoc/logger/rdoc/Logger.html

log = Logger.new(STDOUT)
log.level = Logger::WARN

log.unknown("Unknown") # Always log

# Logger levels, where fatal is the most severe.
# No logs are output whose severity is below log.level.
# In this example, log.info and log.debug are not output.
log.fatal("Fatal")
log.error("Error")
log.warn("Warn")
log.info("Info")
log.debug("Debug")