How to suppress info and success messages in sbt?

Question

When I do sbt run I see some header and footer info which I would like to get rid of:

$ sbt run 
[info] Set current project to XXX (in build file:/path/to/dir/)
<actual program output goes here; stuff I care about>
[success] Total time: 68 s, completed Apr 1, 2012 7:30:45 PM
$ 

How can I get rid of those 2 additional lines (i.e., the [info] and [success] lines)? Are there some build.sbt configuration settings available to do that? Ideally I don't want to have another tool/dependency just to get rid of those 2 lines.

Following is a list of things I have tried:

• Set run logLevel to Warn
• Set Global logLevel to Warn
• Set -Dsbt.log.noformat=true

Workaround that I am currently using: Copy the java invocation that sbt generates (by doing ps or top) as a result of doing fork in run := true and manually run that java command directly on command line.

It would best and much cleaner if sbt can be told not to print those lines.

• Scala version: 2.9.1
• SBT version: 0.11.1

Answer 1

sbt 1.x, sbt 0.13.13+

Use -warn or -error. See Fixes with compatibility implications for sbt 0.13.13 release:

it is strongly encouraged to migrate to the single hyphen options: -error, -warn, -info, and -debug

sbt 0.13.1

To disable info messages run SBT with --warn or --error command line options.

To disable [success] messages set showSuccess to false.

Bringing it all together, it gives you the following options:

• On command line use the following:

    $ sbt --error 'set showSuccess := false' run
  

• In build.sbt add showSuccess := false

    $ cat build.sbt
    showSuccess := false
  

and execute sbt --error run.

Answer 2

As Jacek mentioned in his response, in build.sbt you can add showSuccess := false to suppress the [success] message. To suppress the [info] message, I'd set the logLevel to Level.Warn for the run configuration only. Putting it together, you want to add these lines to build.sbt:

showSuccess := false

logLevel in run := Level.Warn

Answer 3

You should be able to get rid of the "Set current project" line by adding this to your build.sbt file:

onLoadMessage := ""