uml_switch(1) on Linux
The text 55e436f45f6e, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
switch daemon for user-mode Linux
Flags it lists
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-compat-v0 -
-daemon -
-hub