How to run external process in Scala and get both exit code and output?

Question

How to call an external process and read both of its exit code and standard out, once it finished?

Using sys.Process will result in an exception being thrown on different exit code than 0 for success.

Answer 1

Try this:

import sys.process._

val stdout = new StringBuilder
val stderr = new StringBuilder
val logger = ProcessLogger(stdout append _, stderr append _)
val status = "ls -al " ! logger

println(status)
println("stdout: " + stdout)
println("stderr: " + stderr)

Then you got both of them: status, stdout and stderr.