It is behaving as expected according to my reading. hd isn't just a
synonym for hexdump, it's hexdump plus the -C option. You can give
hd/hexdump multiple options to format the same bit of data more than
once.
hexdump without -C:
$ echo foo | hexdump -vce '4/1 "[%x] " "\n"'
0000000 f o o \n
[66] [6f] [6f] [a]
0000004
$
Add -C:
$ echo foo | hexdump -vCce '4/1 "[%x] " "\n"'
00000000 66 6f 6f 0a |foo.|
0000000 f o o \n
[66] [6f] [6f] [a]
0000004
$
Drop -C, switch to hd:
$ echo foo | hd -vce '4/1 "[%x] " "\n"'
00000000 66 6f 6f 0a |foo.|
0000000 f o o \n
[66] [6f] [6f] [a]
0000004
$
The second and third give the same output. hd(1) says
-C ...
Calling the command hd implies this option.
And it does. you simply must use hexdump, not hd, if you don't want -C
in addition to the other output you specify.
--
hexdump invoked as hd prints extra
https://bugs.launchpad.net/bugs/363201
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