I'm trying to emit a hex string like:
echo hello | hexdump -ve '/1 "_%02X"' ; echo
but with % instead.
echo hello | hexdump -ve '/1 "%%%02X"' ; echo
fails with
hexdump: bad conversion character %%
Is there any way to escape % in hexdump format string?
I don't see any way to get hexdump to emit a '%' character directly. Perhaps you could continue to emit the '_' character and then pipe the result through sed to convert the '_' into a '%'. Something like this:
echo hello | hexdump -ve '/1 "_%02X"' | sed -e 's/_/%/g'
which produces:
%68%65%6C%6C%6F%0A