Ascii/Hex convert in bash
The reason is because hexdump
by default prints out 16-bit integers, not bytes. If your system has them, hd
(or hexdump -C
) or xxd
will provide less surprising outputs - if not, od -t x1
is a POSIX-standard way to get byte-by-byte hex output. You can use od -t x1c
to show both the byte hex values and the corresponding letters.
If you have xxd
(which ships with vim), you can use xxd -r
to convert back from hex (from the same format xxd
produces). If you just have plain hex (just the '4161', which is produced by xxd -p
) you can use xxd -r -p
to convert back.