recover(6) on Linux
The text 800e9d48e48a, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge), Debian 3.0 (Woody), Debian 2.2 (Potato), Debian 1.3 (Bo), Debian 1.2 (Rex) shipped it.
recover a NetHack game interrupted by disaster