Initial data commit

Task/Unix-ls/Kotlin/unix-ls.kotlin

@@ -0,0 +1,18 @@
+// Version 1.2.41
+
+import java.io.File
+
+fun ls(directory: String) {
+    val d = File(directory)
+    if (!d.isDirectory) {
+        println("$directory is not a directory")
+        return
+    }
+    d.listFiles().map { it.name }
+                 .sortedBy { it.toLowerCase() }  // case insensitive
+                 .forEach { println(it) }
+}
+
+fun main(args: Array<String>) {
+    ls(".")  // list files in current directory, say
+}