The ext4 filesystem allows some characters that FAT does not allow, such as
:. This has caused me much grief in the past when trying to move files, especially as KDE will delete such files instead of failing the move. Is there any way to configure ext4 to disallow such characters? Right now I am using an up-to-date Kubuntu, but I would like to know the solution in the general sense, for any Linux-based OS.