How to calculate hexadecimal xor (^) from shell?

Like this:

echo $(( 0xA ^ 0xF ))

Or if you want the answer in hex:

printf '0x%X\n' $(( 0xA ^ 0xF ))

On a side note, calc(1) does support xor as a function:

$ calc
base(16)
    0xa
xor(0x22, 0x33)
    0x11

With any POSIX shell:

$ printf '%#x\n' "$((0x11 ^ 0x22))"
0x33

gdb has powerful expression calculator:

gdb -q -ex 'print/x 0xA ^ 0xF' -ex q

A shell function:

calc_gdb() { gdb -q -ex "print/x $*" -ex q;}
calc_gdb 0xA ^ 0xF

$1 = 0x5

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