I am running a fortran program which requires all input file names to be uppercase. As things were originally done in Windo$e all the filenames are mixed case (with numbers). Searching around I came across the "tr" command, but my difficulty comes in trying to use this from the command line (or even in a bash script). mv * | tr [a-z] [A-Z] Does not work as mv requires a directory for the objective with multiple files. All of the scripts that I have seen are mainly for changing the case of text in a text file so wouldn't work for me. So, how would I do this? TIA Dave