Pádraig Brady wrote: > [email protected] wrote: > > ubuntu@ubuntu-VirtualBox:~/.gvfs/account on stockholm/Documents/03 > > professional/structured_documentation$ chmod +x > > doc/filters_for_this_document > > chmod: changing permissions of `doc/filters_for_this_document': Operation > > not supported > > That's a file system presented by gvfs-fuse-daemon, > and it's telling you it doesn't support that operation. > I'm closing this as a chmod issue so.
To provide a little more explanation let me add for Francky that fuse filesystems are hacks to make something appear as a filesystem. They mostly work okay. But they often do not implement everything that is needed by a real filesystem. I am only familiar with sshfs fuse filesystem and it is missing a number of important interfaces, but can read and write files okay so I still use it in spite of deficiencies. Since chmod is detecting an error then it must report it. Since I see VirtualBox in the hostname I can imagine this is either an MS or Mac machine running VirtualBox with an installation of Ubuntu and with a fuse map back to an underlying FAT or NTFS filesystem and the underlying filesystem does not support Unix file mode bits. But that doesn't really matter. The point is that the entire chain must support the operation or there will be an error. The chmod command is just the messenger reporting this to you. If you access those files through a "real" Unix-like filesystem then you won't get that error. Bob
