For linux, you can often use "Midnight Commander" (another dopey name for a good program), which is a sort of character-cell filebrowser
GUI, that can be configured to browse deleted files. However, this is likely to only work on Linux. Example:
mc '/#undel:hdc1'
...then use mc to copy the file(s) you require out of the left pane to
the right pane.
AIX has a product that is a bit similar to the free "mc" method on linux,
which can be found here:
http://www.compunix.com/news.html
For atari 800
