diff --git a/Ant-Common.xml b/Ant-Common.xml
index 1189ee9d..43ef0b06 100644
--- a/Ant-Common.xml
+++ b/Ant-Common.xml
@@ -1,4 +1,4 @@
-<project>
+<project xmlns:if="ant:if" xmlns:unless="ant:unless">
 
   <property name="chapter" value="CHAPTER?"/>
   <property name="antoutput" value="../Ant-output.txt"/>
@@ -80,6 +80,27 @@
      </sequential>
   </macrodef>
 
+  <macrodef name="execscript">
+    <attribute name="name"/>
+    <sequential>
+        <condition property="isWindows">
+            <os family="windows"/>
+        </condition>
+
+        <sequential if:true="isWindows">
+            <echo message="@{name}.bat"/>
+            <exec executable="cmd" dir=".">
+                <arg line="/c @{name}.bat"/>
+            </exec>
+        </sequential>
+        <sequential unless:true="isWindows">
+            <echo message="@{name}.sh"/>
+            <exec executable="sh" dir=".">
+                <arg line="@{name}.sh"/>
+            </exec>
+        </sequential>
+    </sequential>
+  </macrodef>
 
   <!--===========================================================-->
   <target name="base"
diff --git a/network/ChatterServer.sh b/network/ChatterServer.sh
new file mode 100644
index 00000000..5c867bea
--- /dev/null
+++ b/network/ChatterServer.sh
@@ -0,0 +1,3 @@
+java -cp ..:. ChatterServer &
+sleep 1
+java -cp ..:. ChatterClient
diff --git a/network/MultiSimpleServer.sh b/network/MultiSimpleServer.sh
new file mode 100644
index 00000000..deeb4b0a
--- /dev/null
+++ b/network/MultiSimpleServer.sh
@@ -0,0 +1,3 @@
+java -cp ..:. MultiSimpleServer &
+sleep 1
+java -cp ..:. MultiSimpleClient
diff --git a/network/SimpleServer.sh b/network/SimpleServer.sh
new file mode 100644
index 00000000..2c1335c7
--- /dev/null
+++ b/network/SimpleServer.sh
@@ -0,0 +1,3 @@
+java SimpleServer &
+sleep 1
+java SimpleClient
diff --git a/network/build.xml b/network/build.xml
index 2dd31c51..122ab6dc 100644
--- a/network/build.xml
+++ b/network/build.xml
@@ -3,24 +3,16 @@
 <project default="run">
   <property name="chapter" value="network"/>
   <property name="excludedfiles" value=""/>
+
   <import file="../Ant-Common.xml"/>
   <import file="../Ant-Clean.xml"/>
 
   <target name="run" description="Compile and run" depends="build">
     <jrun cls="LocalHost" />
     <jrun cls="WhoAmI" />
-    <echo message="SimpleServer.bat"/>
-    <exec executable="cmd" dir=".">
-      <arg line="/c SimpleServer.bat" />
-    </exec>
-    <echo message="ChatterServer.bat"/>
-    <exec executable="cmd" dir=".">
-      <arg line="/c ChatterServer.bat" />
-    </exec>
-    <echo message="MultiSimpleServer.bat"/>
-    <exec executable="cmd" dir=".">
-      <arg line="/c MultiSimpleServer.bat" />
-    </exec>
+    <execscript name="SimpleServer"/>
+    <execscript name="ChatterServer"/>
+    <execscript name="MultiSimpleServer"/>
   </target>
 
 </project>
diff --git a/remote/build.xml b/remote/build.xml
index 7812199a..9f712d38 100644
--- a/remote/build.xml
+++ b/remote/build.xml
@@ -7,10 +7,7 @@
   <import file="../Ant-Clean.xml"/>
 
   <target name="run" description="Compile and run" depends="build">
-    <echo message="go"/>
-    <exec executable="cmd" dir=".">
-      <arg line="/c go" />
-    </exec>
+    <execscript name="go"/>
   </target>
 
 </project>
diff --git a/remote/go.sh b/remote/go.sh
new file mode 100644
index 00000000..fdff7366
--- /dev/null
+++ b/remote/go.sh
@@ -0,0 +1 @@
+sh ptime.sh
diff --git a/remote/ptime.sh b/remote/ptime.sh
new file mode 100644
index 00000000..04bdb0e2
--- /dev/null
+++ b/remote/ptime.sh
@@ -0,0 +1,6 @@
+sh registry.sh 3 &
+sleep 1
+sh server.sh 3 &
+sleep 1
+java DisplayPerfectTime
+sleep 3
\ No newline at end of file
diff --git a/remote/registry.sh b/remote/registry.sh
new file mode 100644
index 00000000..aff8caf6
--- /dev/null
+++ b/remote/registry.sh
@@ -0,0 +1,3 @@
+rmiregistry &
+sleep $1
+killall rmiregistry
\ No newline at end of file
diff --git a/remote/server.sh b/remote/server.sh
new file mode 100644
index 00000000..df2c9989
--- /dev/null
+++ b/remote/server.sh
@@ -0,0 +1,3 @@
+java PerfectTimeServer &
+sleep $1
+killall java
\ No newline at end of file