printf "%X\n" "A"
41

printf "%X\n" "2"
2
Expected 32 (not 2).

$ printf "%d\n" 0xA
10

$ printf "%d\n" 0x20
32

$ printf "%X\n" 10
A

$ printf "%X\n" 32
20

@Scrutinizer,

Methyl means the ascii code of the character "2" in hexadecimal, which should be 32.

I think the question you meant to ask is
If this is the correct question, then the answer is no.

@Franklin: Oops...

$ printf "%X\n" \'A
41
$ printf "%X\n" \'2
32

Thanks Scrutinizer. It's just unbroken my script!

Just for interest I had been having a go at this post but expanding the problem to any character.

http://www.unix.com/aix/150117-conve...to-binary.html

@Scrutinizer

Where is the \'[value] syntax documented for POSIX shells? I do not think I've seen it. Or more likely I ignored it....

For example:

echo $(( \'A  + 1 ))

> printf "%d\n" \'A
65