netsend(1) on Linux
The text dbd6a9a82117, as Debian 13 (Trixie), Debian 12 (Bookworm) shipped it. The page shows this text now.
a speedy filetransfer and network diagnostic program
Flags it lists
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-P -
-T -
-b -
-m -
-p -
-r -
-s -
-u