xxd(1) on macOS
The text 343f65c3a75a, as macOS 12.2, macOS 12.1, macOS 12.0.1, macOS 11.5, macOS 11.4, macOS 11.3, macOS 11.2, macOS 11.1, macOS 11.0.1, macOS 10.15.6, macOS 10.15.5, macOS 10.15.4, macOS 10.15.3, macOS 10.15.2, macOS 10.15.1, macOS 10.15 shipped it.
make a hexdump or do the reverse.
Flags it lists
-
-C -
-E -
-EBCDIC -
-a -
-autoskip -
-b -
-bits -
-capitalize -
-e -
-h -
-help -
-i -
-include -
-o -
-p -
-plain -
-postscript -
-ps -
-r -
-revert -
-s -
-seek -
-u -
-v -
-version