sbt‘s log level can be set by execute set logLevel := Level.Error inside sbt. How to set the sbt log level at the command line?Add --error to sbt for specify the logLevel to error:sbt --error "your command" Answered by Eric Z Ma.Related posts:How to get the time at millisecond level on Linux with command line? How to install multiple versions of sbt on my Linux host? How to install sbt for scala on Fedora Linux How to set options for scala in sbt How to package a Scala project to a .jar with sbt? How to delete a specific line from a text file in command line on Linux?