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https://issues.apache.org/jira/browse/JENA-1032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14876006#comment-14876006
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Andy Seaborne commented on JENA-1032:
-------------------------------------

Python allows the stdout to be redirected: 

https://docs.python.org/2/library/subprocess.html#using-the-subprocess-module

> riot --to-file parameter
> ------------------------
>
>                 Key: JENA-1032
>                 URL: https://issues.apache.org/jira/browse/JENA-1032
>             Project: Apache Jena
>          Issue Type: Improvement
>          Components: RIOT
>    Affects Versions: Jena 3.0.0
>            Reporter: Stian Soiland-Reyes
>            Priority: Minor
>              Labels: file, output
>
> The {{riot}} command line does not have an option to specify the output file 
> to write to, forcing users to use shell redirections, e.g. 
> {code}
> riot file.ttl > file.nt
> {code}
> This comes up as an issue for the Docker image 
> https://hub.docker.com/r/stain/jena/ - as you can't (easily) do {{> 
> file.txt}} as arguments to docker run to do redirections within the Docker 
> container. 
> Lacking an output file parameter also makes it harder to call riot from other 
> programming languages, e.g. called from a Python script.
> The problem is that the {{--output}} parameter (and --out) is already used to 
> specify the output FORMAT rather than the output FILE. Perhaps --to-file ? 
> Suggested use:
> {code}
> riot --output jsonld --to-file /tmp/output.jsonld /tmp/input.ttl
> {code}



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