With regard to this entry in the shred
*Please note* that `shred' relies on a very important assumption:
that the filesystem overwrites data in place. This is the traditional
way to do things, but many modern filesystem designs do not satisfy this
assumption. Exceptions include:
* Log-structured or journaled filesystems, such as those supplied
with AIX and Solaris, and JFS, ReiserFS, XFS, Ext3, etc.
* Filesystems that write redundant data and carry on even if some
writes fail, such as RAID-based filesystems.
* Filesystems that make snapshots, such as Network Appliance's NFS
* Filesystems that cache in temporary locations, such as NFS version
* Compressed filesystems.
If you are not sure how your filesystem operates, then you should
assume that it does not overwrite data in place, which means that shred
cannot reliably operate on regular files in your filesystem.
Does Fedora use a filesystem that overwrites data in place? Can we safely assume that shred
is effective when deleting single files?
Thanks for any advice in advance