Add files for Windows and 'nix systems

02_01.md

@@ -11,13 +11,15 @@ If you are running Jenkins on a Windows system:
 ```
 ```
 
+[Follow this link for more details on Windows](WINDOWS.md)
+
 # MacOS, Linux, and Docker
 If you are running Jenkins on MacOS, Linux, or Docker:
 
-1. Select the EXECUTE SHELL build step.
+1. Select the `Execute shell` build step.
 2. Enter the following for the command:
 ```
 echo "Hello, Jenkins"
 ```
 
-
+[Follow this link for more details on MacOS, Linux, and Docker](MAC_LINUX_DOCKER.md)

MAC_LINUX_DOCKER.md

@@ -0,0 +1,50 @@
+# Learning Jenkins, 02-01: Your First Jenkins Job
+In this lesson you create your first job.
+
+Use the console to create a freestyle job with one build step.
+
+# MacOS, Linux, and Docker
+If you are running Jenkins on MacOS, Linux, or Docker:
+
+1. Select the `Execute shell` build step.
+2. Enter the following for the command:
+```
+echo "Hello, Jenkins"
+```
+
+# Getting an Error in the First Job
+If you select the `Execute Windows batch command` build step, you will see an error similar to the following:
+```
+Building in workspace /var/jenkins_home/workspace/hello
+[hello] $ cmd /c call /tmp/jenkins3248756842772121939.bat
+FATAL: command execution failed
+java.io.IOException: error=2, No such file or directory
+	at java.base/java.lang.ProcessImpl.forkAndExec(Native Method)
+	at java.base/java.lang.ProcessImpl.<init>(ProcessImpl.java:340)
+	at java.base/java.lang.ProcessImpl.start(ProcessImpl.java:271)
+	at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1107)
+Caused: java.io.IOException: Cannot run program "cmd" (in directory "/var/jenkins_home/workspace/hello"): error=2, No such file or directory
+	at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1128)
+	at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1071)
+	at hudson.Proc$LocalProc.<init>(Proc.java:253)
+	at hudson.Proc$LocalProc.<init>(Proc.java:222)
+	at hudson.Launcher$LocalLauncher.launch(Launcher.java:996)
+	at hudson.Launcher$ProcStarter.start(Launcher.java:508)
+	at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:144)
+	at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:92)
+	at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:21)
+	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:808)
+	at hudson.model.Build$BuildExecution.build(Build.java:199)
+	at hudson.model.Build$BuildExecution.doRun(Build.java:164)
+	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:516)
+	at hudson.model.Run.execute(Run.java:1889)
+	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
+	at hudson.model.ResourceController.execute(ResourceController.java:100)
+	at hudson.model.Executor.run(Executor.java:433)
+Build step 'Execute Windows batch command' marked build as failure
+Finished: FAILURE
+```
+
+This is because the program Jenkins uses with the `Execute Windows batch command` build step is not available on your system.
+
+To fix this error, use the `Execute shell` build step as described above.

WINDOWS.md

@@ -0,0 +1,50 @@
+# Learning Jenkins, 02-01: Your First Jenkins Job
+In this lesson you create your first job.
+
+Use the console to create a freestyle job with one build step.
+
+# WINDOWS SYSTEMS
+If you are running Jenkins on a Windows system:
+
+1. Select the `Execute Windows batch command` build step
+2. Enter the following for the command:
+```
+echo "Hello, Jenkins"
+```
+
+# Getting an Error in the First Job
+If you select the `Execute shell` build step, you will see an error similar to the following:
+```
+Building in workspace C:\Windows\system32\config\systemprofile\AppData\Local\Jenkins\.jenkins\workspace\hello-jenkins
+[hello-jenkins] $ sh -xe C:\Windows\TEMP\jenkins4677419767712773799.sh
+The system cannot find the file specified
+FATAL: command execution failed
+java.io.IOException: CreateProcess error=2, The system cannot find the file specified
+	at java.lang.ProcessImpl.create(Native Method)
+	at java.lang.ProcessImpl.<init>(Unknown Source)
+	at java.lang.ProcessImpl.start(Unknown Source)
+Caused: java.io.IOException: Cannot run program "sh" (in directory "C:\Windows\system32\config\systemprofile\AppData\Local\Jenkins\.jenkins\workspace\hello-jenkins"): CreateProcess error=2, The system cannot find the file specified
+	at java.lang.ProcessBuilder.start(Unknown Source)
+	at hudson.Proc$LocalProc.<init>(Proc.java:253)
+	at hudson.Proc$LocalProc.<init>(Proc.java:222)
+	at hudson.Launcher$LocalLauncher.launch(Launcher.java:996)
+	at hudson.Launcher$ProcStarter.start(Launcher.java:508)
+	at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:144)
+	at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:92)
+	at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:21)
+	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:808)
+	at hudson.model.Build$BuildExecution.build(Build.java:199)
+	at hudson.model.Build$BuildExecution.doRun(Build.java:164)
+	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:516)
+	at hudson.model.Run.execute(Run.java:1889)
+	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
+	at hudson.model.ResourceController.execute(ResourceController.java:100)
+	at hudson.model.Executor.run(Executor.java:433)
+Build step 'Execute shell' marked build as failure
+Finished: FAILURE
+```
+
+This is because the program Jenkins uses with the `Execute shell` build step is not available on your system.
+
+To fix this error, use the `Execute Windows batch command` as described above.
+