Step 1: Type cmd and switch (using “cd” command) to the directory that contains the files you want to rename in bulk. Step 2: Type “dir /b” to see a skeleton list of all files in the current directory. Copy that file list to the clipboard by selecting Mark from the contextual menu. Step 3: The fun starts now. Fire your copy of Microsoft Excel or Google Docs Spreadsheets and paste those file names into the first spreadsheet column. Step 4: In the blank adjacent column, add a corresponding Excel function – for instance, use SUBSTITUTE to change specific text in the filenames, use CONCATENATE() with DATE() if you want to add date to the filename, etc. *For more complex criteria, you may want to put the file extensions in a separate column by splitting the file name using period (.) as the delimiter. Step 5: Your source filenames are now in column A while the Destination files are in column B – we will now convert this into a DOS rename command. In Column C, type the follow...