readproctitle(8) on Linux
The text 64e4d6fa13a2, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it. The page shows this text now.
maintains an automatically rotated log in memory for inspection by ps(1). readproctitle is available in daemontools 0.75 and above.