add Process and Timing

src/main/groovy/com/garypaduana/groovytools/system/Process.groovy

@@ -0,0 +1,48 @@
+package com.garypaduana.groovytools.system
+
+public class Process {
+    
+    /**
+     * Convenience method wrapper for execute(String command, boolean print)
+     */
+    public static def execute(String command){
+        return execute(command, true)
+    }
+
+    /**
+     * Convenience method wrapper for execute(List<String> command, boolean print)
+     */
+    public static def execute(List<String> command){
+        return execute(command, true)
+    }
+
+    /**
+     * A way to make system calls while capturing the error stream.
+     * @param command - the command to execute
+     * @param print - should the output be printed to console line by line?
+     * @return String - the complete output
+     */
+    public static def execute(String command, boolean print){
+        return execute(new ArrayList<String>(Arrays.asList(command.split(" "))), print)
+    }
+
+    /**
+     * A way to make system calls while capturing the error stream.
+     * @param command - the command to execute
+     * @param print - should the output be printed to console line by line?
+     * @return String - the complete output
+     */
+    public static def execute(List<String> command, boolean print){
+        StringBuilder sb = new StringBuilder()
+        println "Executing: ${command.join(' ')}"
+        def process = new ProcessBuilder(command).redirectErrorStream(true).start()
+        process.inputStream.eachLine {
+            if(print){
+                println it
+            }
+            sb.append(it).append("\n")
+        }
+        process.waitFor()
+        return [exitValue: process.exitValue(), body: sb.toString()]
+    }
+}

src/main/groovy/com/garypaduana/groovytools/system/Timing.groovy

@@ -0,0 +1,20 @@
+package com.garypaduana.groovytools.system
+
+public class Timing {
+    
+    public static def delay(def start, def end){
+        (start..end).each(){count ->
+            Thread.sleep(1000)
+            if(count % 10 == 0){
+                print count
+            }
+            else if(count == end){
+                print count
+            }
+            else{
+                print "."
+            }
+        }
+        println ""
+    }
+}