Reference

rdev(8) on Linux

The text 9ee1b713744b, as Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm), Debian 1.3 (Bo), Debian 1.2 (Rex), Debian 1.1 (Buzz) shipped it.

query/set image root device, swap device, RAM disk size, or video mode

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rdev(8) on Linux now