Merge pull request #504 from mdipirro/scala-406

SCALA-406 Add code for os-lib article

Author: dominiqueplante

build.sbt

@@ -280,7 +280,8 @@ lazy val scala_libraries_3 = (project in file("scala-libraries-3"))
     libraryDependencies ++= Seq(
       "org.apache.logging.log4j" %% "log4j-api-scala" % "12.0",
       "org.apache.logging.log4j" % "log4j-core" % "2.13.0" % Runtime
-    )
+    ),
+    libraryDependencies += "com.lihaoyi" %% "os-lib" % "0.8.1"
   )
 
 lazy val scala_strings = (project in file("scala-strings"))

scala-libraries-3/src/main/scala/com/baeldung/scala/os/OsApp.scala

@@ -0,0 +1,14 @@
+package com.baeldung.scala.os
+
+object OsApp extends App {
+  val ls = os.proc("ls", "-l").call()
+  println(ls.exitCode)
+  println(ls.out.text())
+  println(ls.err.text())
+
+  os.proc("ls", "-l", "dir").call()
+
+  os.proc("ls", "-l", "dir").call(check = false)
+
+  val lines = os.read(os.pwd / "LICENSE").linesIterator.size
+}

scala-libraries-3/src/main/scala/com/baeldung/scala/os/ScalaSysApp.scala

@@ -0,0 +1,19 @@
+package com.baeldung.scala.os
+
+import scala.io.Source
+import scala.sys.process._
+
+object ScalaSysApp extends App {
+  val output = "ls -l".!!
+  println(output)
+
+  // This will print the standard output of the "ls -l command", even though we didn't ask for it!
+  val result = Seq("ls", "-l").!
+
+  val outputErr = "ls -l dir".!!
+  val resultErr = "ls -l dir".!
+
+  val source = Source.fromFile("./LICENSE")
+  val lines = source.getLines.size
+  source.close()
+}