Hello, I fairly recently discovered the joys of join, but now I wonder why it is limited to two files?
In other words, I would like to do the following: join file1 file2 ... fileN While I CAN achieve this through other methods, they are not ideal. For instance, paste works with multiple files, but then I must cut out the repeated key columns. The following also works, but doesn't generalize to filename expansions (e.g. `join file*`): join file1 file2 | join - file3 | ... | join - fileN As for my use case, I am working with data files containing the results of multiple systems running over the same test items. I would like to compare the results of all systems for each item by putting them side-by-side. I don't know the history of the command, so I am not aware of any technical or ideological reasons why it shouldn't support more than two files. Any explanation appreciated! -- -Michael Wayne Goodman
