title: Where is the default logging file in Scala's SBT?
body: <p>The <a href="http://www.scala-sbt.org/release/docs/Howto/logging.html">SBT document</a> says that "When a command is run, more detailed logging output is sent to a file than to the screen (by default). ..."</p>
  
  <p>Where is the logging file?</p>
  
  <p>If I use a logging function in my program, where can I find those logs after the program is finished?</p>