shell-genomics

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In the exercise Finding hidden directories, ls -a will output . .. .hidden sra_metadata untrimmed_fastq to the terminal. I think that leaving the . and .. there without explanations might make the learners confused (what are those two directories start with a dot?). Since cd ../ was introduced before this exercise, this exercise might be a good place to add the introduction to .. and/or ., which will only take one sentence or two. Or maybe introduce this exercise before introducing cd ../ so that the learners have some sense of what .. represents before they are taught to use cd ../ to navigate to the parent directory.

+1 I actually taught this today and I had to stop and explain.