The best way to find all versions of a particular file preserved in Snapshot copies is to use the ls command from an NFS client.
ls -l myfile.txt .snapshot/*/myfile.txt -rw-r--r-- 1 smith 0 Jan 14 09:40 myfile.txt -rw-r--r-- 1 smith 0 Jan 13 18:39 .snapshot/nightly.0/myfile.txt -rw-r--r-- 1 smith 0 Jan 12 19:17 .snapshot/nightly.1/myfile.txt
The version of myfile.txt in the active file system was last modified on January 14, but the old versions available in the Snapshot copies were modified on January 13 and January 12. Although the user can use standard UNIX commands to read the saved versions of myfile.txt, they cannot modify or delete these older versions because everything in the .snapshot directory is read-only.