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...l, I have the following problem. Inside R, I am trying to run a loop on several files. The data are stored in these files in a peculiar way, thus, at the same time I load the data, I would like to invoke a utility. I do this with "pipe". (The utility I am using is gbget from the package gbutils. It works correctly from shell, and it is not the problem.) The problem is that from within pipe I do not know how to have the loop running. I guess I should manage to unquote the quotation mark inside the pipe for the loop to run, but I do not how to do it. In the following examples, for instance...