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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?
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"] ];
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.
WriteString before.
$\endgroup$
– Simon
Jan 25 '12 at 4:45
Printfor outputting warnings in this superuser question. Is there a better way of printing warnings to the terminal? $\endgroup$ – Simon Jan 25 '12 at 4:17Message, which seems to be the usual way to handle warnings in Mathematica (I think). $\endgroup$ – David Z Jan 25 '12 at 7:50Messages[General]does not contain an appropriate message for me to use). $\endgroup$ – Simon Jan 25 '12 at 8:05./helloshould also work on OS X if the script is executable (and you have the right shebang) $\endgroup$ – acl Jan 25 '12 at 10:04