NiFi template containing a `ExecuteProcess` processor connected to a `LogAttribute` processor.

execute_and_print.xml

<?xml version="1.0" ?>
<template encoding-version="1.0">
  <description></description>
  <groupId>459549da-0157-1000-e381-c7ba87f8ff61</groupId>
  <name>ExecuteProcess and print output</name>
  <snippet>
    <connections>
      <id>6e22e0ec-0157-1000-0000-000000000000</id>
      <parentGroupId>459549da-0157-1000-0000-000000000000</parentGroupId>
      <backPressureDataSizeThreshold>1 GB</backPressureDataSizeThreshold>
      <backPressureObjectThreshold>10000</backPressureObjectThreshold>
      <destination>
        <groupId>459549da-0157-1000-0000-000000000000</groupId>
        <id>6e22ae1c-0157-1000-0000-000000000000</id>
        <type>PROCESSOR</type>
      </destination>
      <flowFileExpiration>0 sec</flowFileExpiration>
      <labelIndex>1</labelIndex>
      <name></name>
      <selectedRelationships>success</selectedRelationships>
      <source>
        <groupId>459549da-0157-1000-0000-000000000000</groupId>
        <id>6e0d4685-0157-1000-0000-000000000000</id>
        <type>PROCESSOR</type>
      </source>
      <zIndex>0</zIndex>
    </connections>
    <processors>
      <id>6e0d4685-0157-1000-0000-000000000000</id>
      <parentGroupId>459549da-0157-1000-0000-000000000000</parentGroupId>
      <position>
        <x>1.0</x>
        <y>0.0</y>
      </position>
      <config>
        <bulletinLevel>WARN</bulletinLevel>
        <comments></comments>
        <concurrentlySchedulableTaskCount>1</concurrentlySchedulableTaskCount>
        <descriptors>
          <entry>
            <key>Command</key>
            <value>
              <name>Command</name>
            </value>
          </entry>
          <entry>
            <key>Command Arguments</key>
            <value>
              <name>Command Arguments</name>
            </value>
          </entry>
          <entry>
            <key>Batch Duration</key>
            <value>
              <name>Batch Duration</name>
            </value>
          </entry>
          <entry>
            <key>Redirect Error Stream</key>
            <value>
              <name>Redirect Error Stream</name>
            </value>
          </entry>
          <entry>
            <key>Argument Delimiter</key>
            <value>
              <name>Argument Delimiter</name>
            </value>
          </entry>
        </descriptors>
        <lossTolerant>false</lossTolerant>
        <penaltyDuration>30 sec</penaltyDuration>
        <properties>
          <entry>
            <key>Command</key>
            <value>/Users/alopresto/Workspace/scratch/process-test/script.sh</value>
          </entry>
          <entry>
            <key>Command Arguments</key>
            <value>1 2 3</value>
          </entry>
          <entry>
            <key>Batch Duration</key>
          </entry>
          <entry>
            <key>Redirect Error Stream</key>
            <value>true</value>
          </entry>
          <entry>
            <key>Argument Delimiter</key>
            <value> </value>
          </entry>
        </properties>
        <runDurationMillis>0</runDurationMillis>
        <schedulingPeriod>5 sec</schedulingPeriod>
        <schedulingStrategy>TIMER_DRIVEN</schedulingStrategy>
        <yieldDuration>1 sec</yieldDuration>
      </config>
      <name>ExecuteProcess</name>
      <relationships>
        <autoTerminate>false</autoTerminate>
        <name>success</name>
      </relationships>
      <style></style>
      <type>org.apache.nifi.processors.standard.ExecuteProcess</type>
    </processors>
    <processors>
      <id>6e22ae1c-0157-1000-0000-000000000000</id>
      <parentGroupId>459549da-0157-1000-0000-000000000000</parentGroupId>
      <position>
        <x>0.0</x>
        <y>264.0</y>
      </position>
      <config>
        <bulletinLevel>WARN</bulletinLevel>
        <comments></comments>
        <concurrentlySchedulableTaskCount>1</concurrentlySchedulableTaskCount>
        <descriptors>
          <entry>
            <key>Log Level</key>
            <value>
              <name>Log Level</name>
            </value>
          </entry>
          <entry>
            <key>Log Payload</key>
            <value>
              <name>Log Payload</name>
            </value>
          </entry>
          <entry>
            <key>Attributes to Log</key>
            <value>
              <name>Attributes to Log</name>
            </value>
          </entry>
          <entry>
            <key>Attributes to Ignore</key>
            <value>
              <name>Attributes to Ignore</name>
            </value>
          </entry>
          <entry>
            <key>Log prefix</key>
            <value>
              <name>Log prefix</name>
            </value>
          </entry>
        </descriptors>
        <lossTolerant>false</lossTolerant>
        <penaltyDuration>30 sec</penaltyDuration>
        <properties>
          <entry>
            <key>Log Level</key>
            <value>info</value>
          </entry>
          <entry>
            <key>Log Payload</key>
            <value>true</value>
          </entry>
          <entry>
            <key>Attributes to Log</key>
          </entry>
          <entry>
            <key>Attributes to Ignore</key>
          </entry>
          <entry>
            <key>Log prefix</key>
          </entry>
        </properties>
        <runDurationMillis>0</runDurationMillis>
        <schedulingPeriod>0 sec</schedulingPeriod>
        <schedulingStrategy>TIMER_DRIVEN</schedulingStrategy>
        <yieldDuration>1 sec</yieldDuration>
      </config>
      <name>LogAttribute</name>
      <relationships>
        <autoTerminate>true</autoTerminate>
        <name>success</name>
      </relationships>
      <style></style>
      <type>org.apache.nifi.processors.standard.LogAttribute</type>
    </processors>
  </snippet>
  <timestamp>09/27/2016 17:28:53 PDT</timestamp>
</template>