cmdtest - 0.32-3 main

cmdtest black box tests Unix command line tools. Roughly, it is given a
a script, its input files, and its expected output files. cmdtest runs
the script, and checks the output is as expected.
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cmdtest is aimed specifically at testing non-interactive Unix command
line programs, and tries to make that as easy as possible.
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Also included is a "scenario testing" tool, yarn.