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There are some rather archaic behaviors of the versions of these tools that come by default on MasOSX.

For instance, on a mac the 'sed' command doesn't understand the difference between space and tab

https://stackoverflow.com/questions/40311339/using-sed-on-ma...

Oh, very likely true. But nothing stands in your way to just replace them with the GNU versions. Still way easier than running a Docker container...

You do however now need to tell all the users of your tutorial to go and install brew, then install coreutils and then to replace every use of "sort" with "gsort", etc.

Running a docker container, regardless of what it does under the hood, is extremely easy on a mac. You install a program then do "docker run ...".

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