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Multiline shebang: Difference between revisions
add matlab shebang
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Note that we've left off the onfail handler within J, and just used a minimal definition to give us a non-zero exit code for the error case. Mostly, the assumption here would be that the error message would not be interesting, and that any failure should be handled by a retry. But you could replace the exit on error line here with the full definition and 9!: preparatory bit from the previous example and you could also of course change the 1!:2&2 lines (1!:2&2 is the "low-level" write to stdout mechanism for J - and, yes, those numbers are part of the definition of the language - or at least the "Foreigns" part of the language - note that ultimately all computer languages resolve to things which can be thought of as numbers or sequences of numbers, though some people will vigorously assert other things).
=={{header|MATLAB}}==
Unlike Octave, MATLAB has no built-in support for shebangs. In fact, several tricks are required to even approximate a shebang, due to the byzantine way that MATLAB structures scripts and function files.
~/bin/shmatlab%:
<lang bash>#!/bin/sh
matlab -nojvm -nodisplay -nosplash -r "varargin = regexp('${1+"$@"}', ' ', 'split'); nvarargin = length(varargin); run('$1'); exit" | tail -n +16
</lang>
args.m:
<lang matlab>'shmatlab'% $0 ${1+"$@"}
'exit';
for i = 1:nvarargin
disp(varargin{i});
end</lang>
Example:
<pre>
$ ./args.m a b c
./args.m
a
b
c
</pre>
=={{header|OCaml}}==
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