diff --git a/lib/shell.js b/lib/shell.js
index a36b4b4..db98ced 100644
--- a/lib/shell.js
+++ b/lib/shell.js
@@ -27,7 +27,7 @@ var ShellObject = function() {
             this.interface = CreateObject("WScript.Shell");
             this.currentDirectory = this.interface.CurrentDirectory;
         } catch (e) {
-            console.error("ShellObject.create() -> " + e.message);
+            console.error("ShellObject.create() ->", e.message);
         }
         return this;
     };
@@ -36,7 +36,7 @@ var ShellObject = function() {
         if (typeof(dirname) === "string") {
             this.workingDirectory = dirname;
             this.interface.CurrentDirectory = this.workingDirectory;
-            console.info("ShellObject.workingDirectory -> " + this.workingDirectory);
+            console.info("ShellObject.workingDirectory ->", this.workingDirectory);
         }
         return this;
     };
@@ -66,23 +66,24 @@ var ShellObject = function() {
     this.createProcess = function(cmd) {
         try {
             var c = this.build(cmd);
-            console.info("ShellObject.createProcess() -> " + c);
+            console.info("ShellObject.createProcess() ->", c);
             return this.interface.Exec(c);
         } catch (e) {
-            console.error("ShellObject.createProcess() -> " + e.message);
+            console.error("ShellObject.createProcess() ->", e.message);
         }
     };
 
     this.exec = function(cmd, stdOutPath, stdErrPath) {
         var stdout, stderr;
-        var stdOutPath = (typeof(stdOutPath) === "undefined" ? "stdout.txt" : stdOutPath);
-        var stdErrPath = (typeof(stdErrPath) === "undefined" ? "stderr.txt" : stdErrPath);
+		var seed = parseInt(Math.random() * 10000);
+        var stdOutPath = (typeof(stdOutPath) === "undefined" ? "tmp\\stdout_" + seed + ".txt" : stdOutPath);
+        var stdErrPath = (typeof(stdErrPath) === "undefined" ? "tmp\\stderr_" + seed + ".txt" : stdErrPath);
 
         var c = "%comspec% /c (" + this.build(cmd) + ") 1> " + stdOutPath;
         //c += " 2>&1";
         c += " 2> " + stdErrPath;
         this.interface.Run(c, 0, true);
-        console.info("ShellObject.exec() -> " + c);
+        console.info("ShellObject.exec() ->", c);
         sleep(1);
 
         if (FILE.fileExists(stdOutPath)) {
@@ -104,14 +105,14 @@ var ShellObject = function() {
     this.run = function(cmd, fork) {
         var fork = (typeof(fork) !== "undefined") ? fork : true;
         var c = "%comspec% /q /c (" + this.build(cmd) + ")";
-        console.info("ShellObject.run() -> " + c);
+        console.info("ShellObject.run() ->", c);
         this.interface.Run(c, (!this.isVisibleWindow ? 0 : 1), !fork);
     };
 
     this.runAs = function(FN, args) {
         var oShell = CreateObject("Shell.Application");
         var _args = null;
-        console.info("ShellObject.runAs() -> " + FN);
+        console.info("ShellObject.runAs() ->", FN);
         if (typeof(args) !== "undefined") {
             _args = args.join(' ');
         }
@@ -143,7 +144,7 @@ var ShellObject = function() {
     };
 
     this.release = function() {
-        console.info("ShellObject.release() -> " + this.currentDirectory);
+        console.info("ShellObject.release() ->", this.currentDirectory);
         this.interface.CurrentDirectory = this.currentDirectory;
         this.interface = null;
     };