We recently implemented a batchlet, OsCommandBatchlet, in jberet-support module.  This batchlet allows you to run native OS commands in a batch job step.

Many tasks can make use of this OsCommandBatchlet to run system commands as an integral part of the batch work flow.  For example,

* split a large text files into multiple smaller files by number of lines, to prepare for partitioned step execution;

* sort large text files;

* merge multiple text files;

* cut text files by columns;

* generate pdf report files by running acrobat command line tools;

* any other custom shell scripts or Windows bat scripts.

More details, please see JIRA issue:

An example job.xml using OsCommandBatchlet:

<job id="job1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" version="1.0">
  <step id="job1.step1">
  <batchlet ref="osCommandBatchlet">
  <properties>
  <property name="commandLine" value="split -l 200 /Users/cfang/dev/jsr352/jberet-support/src/test/resources/ca2013entities_ascii.txt ca2013entities_part_"/>
  <!--

  <property name="commandArray" value="#{jobParameters['commandArray']}"/>

  -->
  <property name="workingDir" value="#{jobParameters['workingDir']}"/>
  <property name="commandOkExitValues" value="#{jobParameters['commandOkExitValues']}"/>
  <property name="timeoutSeconds" value="#{jobParameters['timeoutSeconds']}"/>
  <property name="environment" value="FOO=1, BAR=a"/>

  <property name="streamHandler" value="org.jberet.support.io.OsCommandBatchletTest$NoopStreamHandler"/>
  </properties>
  </batchlet>
  </step>
</job>