Added Commands

- To better understand networking UNIX command line tools.

Author: siddhant-vij

src/com/unixtools/command/filecontent/AwkCommand.java renamed to src/com/unixtools/command/filecontent/EchoCommand.java

@@ -1,5 +1,5 @@
 package com.unixtools.command.filecontent;
 
-public class AwkCommand {
+public class EchoCommand {
 
 }

src/com/unixtools/command/filecontent/SedCommand.java

@@ -0,0 +1,5 @@
+package com.unixtools.command.networking;
+
+public class IfconfigCommand {
+  
+}

src/com/unixtools/command/networking/IfconfigCommand.java

@@ -0,0 +1,5 @@
+package com.unixtools.command.networking;
+
+public class TracerouteCommand {
+  
+}

src/com/unixtools/command/networking/TracerouteCommand.java

@@ -0,0 +1,5 @@
+package com.unixtools.command.networking;
+
+public class WgetCommand {
+  
+}