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Here's a simple script saved in the file hello

#!/usr/local/bin/MathematicaScript -script
Print["Hello world"]

I can then run this file using math -script hello or, if the file is set to be executable, ./hello.
In Windows or OSX, run MathKernel -script hello

It prints

"Hello world"

to the terminal.

How can I change this so it does not print the quotation marks?

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  • $\begingroup$ I was using Print for outputting warnings in this superuser question. Is there a better way of printing warnings to the terminal? $\endgroup$
    – Simon
    Jan 25 '12 at 4:17
  • $\begingroup$ Have a look at Message, which seems to be the usual way to handle warnings in Mathematica (I think). $\endgroup$
    – David Z
    Jan 25 '12 at 7:50
  • $\begingroup$ @David: You're right, but then I need to define a new message, which seemed overkill for a short script (Messages[General] does not contain an appropriate message for me to use). $\endgroup$
    – Simon
    Jan 25 '12 at 8:05
  • $\begingroup$ not that this matters, but ./hello should also work on OS X if the script is executable (and you have the right shebang) $\endgroup$
    – acl
    Jan 25 '12 at 10:04
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Another option is to set FormatType -> OutputForm on the $Output stream:

SetOptions[ $Output, FormatType -> OutputForm ];
Print["Hello"];

Or call OutputForm on the string itself:

Print[ OutputForm["Hello"] ];
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  • $\begingroup$ +1 That's the solution I came up with after noticing the docs say that for Mathematica scripts, all output is in InputForm. (This was after posting the question) $\endgroup$
    – Simon
    Jan 25 '12 at 4:44
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WriteString is the function you're looking for. It takes two parameters, the first one being the stream you want to write to (in your case standard output, $Output), the second argument is what you want to print.

#!/usr/local/bin/MathematicaScript -script
WriteString[$Output, "Hello World!\n"]
david@thinkpad:~/temp$ ./asdf
Hello World!

If you need more general information about streams in Mathematica have a look at the corresponding help page.

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  • $\begingroup$ +1 Thanks David. I'd never used WriteString before. $\endgroup$
    – Simon
    Jan 25 '12 at 4:45

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