/usr/share/doc/ruby-gsl/examples/histogram/cauchy.sh is in ruby-gsl 2.1.0.3+dfsg1-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | #!/bin/sh
gsl-randist 0 10000 cauchy 30 | ruby cauchy.rb -100 100 200
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