Forum: JRuby Shebang script with arguments

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Rodrigo Botafogo (Guest)
on 2015-03-30 22:57
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I have a shebang script for jruby, and I need to change the java heap
in it.  How do I do that?  Is it possible?


#!/usr/bin/env jruby -J-Xmx1024m

does not work.

I´ve seen a suggestion, that for Python the best would be to add the
parameter to a shell variable.  Can this be done for JRuby?

Thanks a lot....
Charles Duffy (Guest)
on 2015-03-30 23:06
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POSIX doesn't generally allow more than one argument (other than the
interpreter name itself) to be passed as part of a shebang, so even if
your operating system supports this, it won't be portable: You've
already filled that one position with "jruby", since slot 0 is "env".

On Mon, Mar 30, 2015 at 3:55 PM, Rodrigo Botafogo
Rodrigo Botafogo (Guest)
on 2015-03-30 23:13
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So, can I use shell variables? Any other solution? Any ideas?


2015-03-30 18:05 GMT-03:00 Charles Duffy <>:
Rodrigo Botafogo (Guest)
on 2015-03-30 23:14
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Does JRUBY_OPTS helps in this case?  How do I use this?

2015-03-30 18:12 GMT-03:00 Rodrigo Botafogo
Chris Seaton (Guest)
on 2015-03-30 23:19
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You can have a second script that executes JRuby with the arguments you
want, and use that in the shebang line.

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