Issuing native system commands in Scala

Question

I want to issue a native system command from a Scala program, and perhaps trap the output. (\"ls\" comes to mind. There may be other ways to get directory information without is

Answer 1

Scala is not different from Java in this area, since you can call any Java API functions using Scala's interop features. See for example, java.lang.ProcessBuilder.

Answer 2

You can do it using sys.process easily:

Executing system commands and getting their status code (exit code):

import sys.process._

val result = "your_command" !
println("result = "+result) // result contain zero for success or non zero for fail

Getting output from system commands:

import sys.process._

val result = "your_command" !!
println("result = "+result) // result contain output from the command

You have several other options (pipeline, Redirect STDOUT, Append to STDOUT and ...), you can see this link.

Answer 3

Best way to do that is to use scala.sys.process.

Answer 4

import scala.sys.process._

val vimLocation: String = "whereis vim" !!

reference

Answer 5

Scala has complete interoperability with Java. So you can call the system commands from Scala as you would from Java. See this to see how to call system commands from Java.