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A comment on Writing a Polyglot Script.

Re:Writing a Polyglot Script by rcthompson on Saturday January 25, 2020 @02:12PM (#22147996)
Not exactly a polyglot script, but a while back I had to work on a cluster whose job management system always ran everything as shell scripts. Or rather, it had to be run as a shell script in order to set the right cluster options. I wanted to submit an R script, so what did I do? I wrote a file that was both a bash script and an R script. When run as an R script, it does what I want it to do. When run as a bash script, it runs itself as an R script (after setting the cluster options). Problem "solved".

Here is is, if anyone's interested: https://gist.github.com/DarwinAwardWinner/2eb3705fb6ddab08ee...

And here's the Python version: https://gist.github.com/DarwinAwardWinner/8a631d897d45f00552...

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Re:Writing a Polyglot Script by fwip on Saturday January 25, 2020 @06:35PM (#22149347)
Wouldn't it have been easier to submit:

    #!/bin/bash
    Rscript myscript.R
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Re:Writing a Polyglot Script by shakna on Saturday January 25, 2020 @07:28PM (#22149575)
They may have only been able to submit the single file to the system. (In which case I would have generated the Rscript to a tmpfile, but maybe that wasn't allowed either.)
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Re:Writing a Polyglot Script by rcthompson on Saturday January 25, 2020 @08:01PM (#22149701)
No, I totally could have written a separate R script that was then run by the bash script. I just wanted to have it all in one file, and I thought it was a fun challenge figuring out how to do it.
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Re:Writing a Polyglot Script by niedzielski on Saturday January 25, 2020 @07:06PM (#22149469)
I've been collected hacks for a couple languages and tools here: https://git.io/shebang
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Re:Writing a Polyglot Script by rcthompson on Tuesday January 28, 2020 @12:24AM (#22166689)
I think the difference with mine is that I actually need to squeeze some shell code in there as well, to set up the cluster environment before "handing off" to R/Python.
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