Changes between Initial Version and Version 1 of Tutorial/HowToCommand

Timestamp:

Nov 19, 2007, 11:19:11 PM (18 years ago)

Author:

thierry

Comment:

—

Tutorial/HowToCommand

@@ +1 @@
+
+Go back --> [wiki:Tutorial Tutorials]
+
+== How to use execute a shell command on the nodes ==
+
+This feature is only available in NodeHandler v4 and above.
+
+Before going through this tutorial, you should know [wiki:Tutorial/HowToImage how to install a disk image]. 
+
+You should also have installed a disk image with Node Agent v4 on the nodes of the testbed you are using (e.g. "baseline-7.11.ndz").
+
+=== Goal ===
+
+In this tutorial, you will learn a simple way to run a shell commands on the nodes of a testbed.
+  
+=== The tutorial experiment ===
+
+This experiment is given in the attached script [attachment:tut_cmd_1.rb tut_cmd_1.rb]. 
+
+This file contains extensive comments that should help you understand the different steps involved in executing a shell command on the nodes of a testbed. For more information on the basics of writing and using an experiment script, please refer to the previous tutorials, [wiki:Tutorial/HowtoWriteScripts here] and [wiki:Tutorial/HelloWorld here].
+
+To run this example script, use the following command:
+
+ {{{
+  nodehandler4 tut_cmd_1
+ }}}
+
+(This assumes that you previously logged in to the a testbed, and imaged its nodes with the a disk image such as "baseline-7.11.ndz".)
+
+=== The Results ===
+
+The experiment screen output should then look like [attachment:grid_2007_08_27_20_45_37-Output.txt this]. And the experiment log file should look like  [attachment:grid_2007_08_27_20_45_37.log this]. 
+
+=== More... ===
+
+This other script [attachment:tut_topo_1_more.rb tut_topo_1_more.rb] contains an extended version of the above script with more optional features.