bitop
BITOP
BITOP operation destkey key [key ...]
Perform a bitwise operation between multiple keys (containing string values) and store the result in the destination key.
The BITOP command supports four bitwise operations: AND, OR, XOR and NOT, thus the valid forms to call the command are:
BITOP AND destkey srckey1 srckey2 srckey3 ... srckeyN
BITOP OR destkey srckey1 srckey2 srckey3 ... srckeyN
BITOP XOR destkey srckey1 srckey2 srckey3 ... srckeyN
BITOP NOT destkey srckey
As you can see NOT is special as it only takes an input key, because it performs inversion of bits so it only makes sense as a