addr2name(1) on Linux
The text 16db76215efc, as Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
perform DNS lookups from scripts
Flags it lists
-
--help -
--ipv4 -
--ipv6 -
--multiple -
--numeric -
--reverse -
--version -
-4 -
-6 -
-h -
-m -
-n -
-r