Two dots in the file name are causing problem. Viewed 9k times 11. 3. Convert To Legal File Name: 6. Retrieves the date from the beginning of the WinSat filename and creates a datetime object from it: 4. The dot as last character in file or folder name tells Windows that what comes thereafter is an extension. A file extension is the set of three or four characters at the end of a filename; in this case, .dot. (dot) in a filename. The dot in that situation is part of the filename and has in the Linux/Unix context the meaning that the file or directory is hidden, you cannot see it in the file explorer (Nautilus, which is default on the vanilla Ubuntu), unless you press CTRL+H.. And, if you only use ls in the terminal, you will not see it either unless you use the -a or -A flag with it (i.e. Ask Question Asked 4 years, 2 months ago. Clean File Name: 3. In order to remove without any problem files or folders whose name ended with a dot in Window without any external program or utility, we will need to use the command prompt of windows and execute some commands according to your case (replacing the