archiving floppy disks, natively on CP/M

I still have a Z80 CP/M SBC (single board computer).
When I decommissioned it, I used the modem/file transfer program
to xmodem-batch send all the files to PROCOMM on a MS-DOS PC.

I plan to reconstruct that setup
but this time to Linux using rz:
    rx, rb, rz - XMODEM, YMODEM, ZMODEM (Batch) file receive

What of the boot tracks?
Is there any CP/M equivalent to Unix/Linux "dd"
or hex dump?

I have a greaseweazle but have not set up the toolchain.
Most of my CP/M floppies are NOT bootable
so archiving the files is fine.

thanks
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