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#!/usr/bin/env ruby
require 'logger'
log = Logger.new(STDERR)
def do_log(log)
log.debug('do_log1') { "debug" }
log.info('do_log2') { "info" }
log.warn('do_log3') { "warn" }
log.error('do_log4') { "error" }
log.fatal('do_log6') { "fatal" }
log.unknown('do_log7') { "unknown" }
end
log.level = Logger::DEBUG # Default.
do_log(log)
puts "Set severity threshold 'WARN'."
log.level = Logger::WARN
do_log(log)
puts "Change datetime format. Thanks to Daniel Berger."
log.datetime_format = "%d-%b-%Y@%H:%M:%S"
do_log(log)
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