/etc/skey
directory containing S/Key user entries
Prune zeroed and old entries from s/key database
skeyprune [days]
skeyprune searches through the S/Key database, /etc/skey, and prunes out entries that have been zeroed out via skeyinit(1) as well as entries that have not been modified in days days. If days is not specified, only invalid entries are pruned.
If a malformed entry is encountered, or if the file mode/type is incorrect, an error is printed to the standard error.
/etc/skey
directory containing S/Key user entries
The following errors are cause for concern.
The S/Key database directory, /etc/skey, does not exist. The superuser may create it by running “skeyinit -E”.
The user's entry was found in /etc/skey but it could not be opened.
The user's entry is not a regular file.
The user's entry had a bad file mode (should be 0600).
The user's entry had a bad link count (should be 1).
The user's entry was not of the correct format, as specified by skey(5).
61 releases since OpenBSD 2.1; the text changed 11 times.