Doffy is such a beast , Legend Doffy will turn my Fujitora from a walking cheatcode to a full fledged hacker xD . But the two units I want the most right now are Gladius and Kalifa . It ' s a shame that 3 out of 4 best QCK Driven are RR , with 2 being legends . <| sep |> There used to be tons of great clones . <| sep |> I think you ' ve got a problem with how you ' ve shown your code , but you might like to try thisfor file in $ do ufile $ echo $ file tr ' az ' ' AZ ' mv $ file $ ufile doneor , if you want to remove the variable assignment and correct all the other issuesfor file in $ do mv $ $ tr '' '' $ doneor if your version of bash is new enough i . e . bash 4 , it can just uppercase variables itselffor file in $ do mv $ $ doneOne thing to watch out for is spaces in filenames , you may like to look at the rename command instead of this , but be aware there are two different variants of this command .