AEM 6.3, CommandLineProcess: failed to execute command

[jeroend42683933]

I am trying to create renditions for a gif file using Gifsicle: Command-Line Animated GIFs  When I run the command in my terminal its works but when ran from inside the workflow (still on my local machine) it fails:

Command (in workflow):

/usr/local/Cellar/gifsicle/1.90/bin/gifsicle ${filename} --resize 1680x1680 > cq5dam.web.1680.1680.gif

error.log:

*ERROR* [JobHandler: /etc/workflow/instances/server1/2017-11-29/update_asset_3:/content/dam/1000rendition/testgif.gif/jcr:content/renditions/original] 
com.day.cq.dam.core.process.CommandLineProcess execute: failed to execute command 
[[/usr/local/Cellar/gifsicle/1.90/bin/gifsicle, testgif.gif, --resize, 1680x1680, >, cq5dam.web.1680.1680.gif]]  for asset [/content/dam/1000rendition/testgif.gif]:
org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1)
at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:404)
at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:166)
at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:153)
at com.day.cq.dam.core.process.CommandLineProcess$2.run(CommandLineProcess.java:276)
at com.day.cq.dam.core.impl.jmx.AssetUpdateMonitorImpl$UpdateStep.checkAndRun(AssetUpdateMonitorImpl.java:978)
at com.day.cq.dam.core.process.CommandLineProcess.execute(CommandLineProcess.java:194)
at com.day.cq.workflow.compatibility.CQWorkflowProcessRunner.execute(CQWorkflowProcessRunner.java:93)
at com.adobe.granite.workflow.core.job.HandlerBase.executeProcess(HandlerBase.java:189)
at com.adobe.granite.workflow.core.job.JobHandler.process(JobHandler.java:258)
at org.apache.sling.event.impl.jobs.JobConsumerManager$JobConsumerWrapper.process(JobConsumerManager.java:500)
at org.apache.sling.event.impl.jobs.queues.JobQueueImpl.startJob(JobQueueImpl.java:291)
at org.apache.sling.event.impl.jobs.queues.JobQueueImpl.access$100(JobQueueImpl.java:58)
at org.apache.sling.event.impl.jobs.queues.JobQueueImpl$1.run(JobQueueImpl.java:227)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

I have no idea why this is failing, the logging is not really helping. All help is appreciated, thanks in advance!

[Jdruwe]

Apparently  ` > cq5dam.web.1680.1680.gif` is not allowed as part of the command as discussed here: https://stackoverflow.com/questions/43120035/processbuilder-failing-when-calling-a-system-command-wh.... You can fix it by setting a redirectOutput on the builder but of course this is deeply nested into the workflow and is not easily changed.

[Jdruwe]

I am now able to create renditions using gifsicle using following commands in my step:

cp ${filename} cq5dam.web.1680.1680.gif
gifsicle --batch cq5dam.web.1680.1680.gif --resize 1680x1680
cp ${filename} cq5dam.web.1024.1024.gif
gifsicle --batch cq5dam.web.1024.1024.gif --resize 1024x1024
cp ${filename} cq5dam.web.600.600.gif
gifsicle --batch cq5dam.web.600.600.gif --resize 600x600