HiHo Forum, as the topic title already says, I'm looking for a non-invasive way to check if a file or directory is writable / deletable. I drafted two methods which both work fine, but are invasive (file is changed). Method1 tries to set or unset the Archive attribute. This is invasive (file is changed) but works for both files and directories. Method2 tries to open files for write access (non-invasive!), but relies on creating files in directories (invasive again, *sigh*) to check t