RenameFostexFR2.scala

// import de.sciss.file._

val fmtIn  = new java.text.SimpleDateFormat("'B'HH'h'mm'm'ss's'ddMMMyyy'.wav'")
val fmtOut = new java.text.SimpleDateFormat("yyMMdd_HHmmss'.wav'")

def rename(dir: File, prefix: String): Unit = {
  require(dir.isDirectory)
  dir.children.foreach { fIn => 
    try {
      val date = fmtIn.parse(fIn.name)
      val out  = fmtOut.format(date)
      val fOut = dir / s"$prefix$out"
      import sys.process._
      Seq("mv", fIn.path, fOut.path).!
      
    } catch {
      case _: java.text.ParseException =>
    }
  }
}

// rename(userHome/"Documents"/"devel"/"Configuration"/"rec", prefix = "config-")