Work at the bit level. For certain low-level tasks.
| Operator | Description |
|---|---|
~ |
Bitwise negation. Negate all the bits in a number. |
<< |
Left bitwise shift. Shift all bits in a number to the left. |
>> |
Right bitwise shift. Shift all bits in a number to the right. |
& |
Bitwise AND. Perform AND operation on all bits in two numbers. |
| ` | ` |
^ |
Bitwise XOR. Perform an exclusive OR operation on all bits in two numbers. |
Note that there are also corresponding assignment operators (for
example, <<=) for all but bitwise negation.
# produce a list of powers of 2 using left bitwise shift operator
[me@linuxbox ~]$ for ((i=0;i<8;++i)); do echo $((1<<i)); done
1
2
4
8
16
32
64
128