How to run a command when sbt starts and keep the session active?

问题

If we define initialCommands in console += "1+1" this will run after console is executed.

Is it possible to run a command after sbt starts, like initialCommands in sbtStartup += "console" to enter the console automatically?

I'd like to keep the session (after executing the command) active.

回答1:

from http://www.scala-sbt.org/0.13.5/docs/faq.html#how-can-i-take-action-when-the-project-is-loaded-or-unloaded

http://www.scala-sbt.org/0.13.5/api/index.html#sbt.StateOps

onLoad in Global := {
  ((s: State) => { "console" :: s }) compose (onLoad in Global).value
}

回答2:

Executing sbt launcher with a task or command on command line executes it after sbt is up and running. sbt console would give you what you're after yet sbt will shutdown after the task/command finishes (I can only suspect that was the intent of the OP).

来源：https://stackoverflow.com/questions/25388592/how-to-run-a-command-when-sbt-starts-and-keep-the-session-active