title: yum install sbt on CentOS 6.8
body: <p>1)After the yum install, I typed <strong>sbt</strong> in home directory. It downloaded a whole lot of packages. But it also downloaded Scala version 2.10.0. I already have a more recent SCALA installed...2.12.X</p>
  
  <p>2)I also get the error
  [error] <strong>IllegalArgumentException</strong>: requirement failed: Source file <strong>"/usr/bin/jmc.ini"</strong> does not exist.</p>
  
  <p>3)I have created a file called build.sbt
  When I run <strong>$ sbt build</strong> I get the following error
  [error] Not a valid command: build</p>
  
  <p>4)ALSO, every time I run the SBT command, it tries to download packages...is this correct ?</p>