As mentioned a few times before there is an ability to sequence commands using semicolon operator.

    It simply runs the second command after finishing the first one, like in a shell.

    The second important way to sequence the commands is with a simple pipe |

    1. ao|grep address

    For example, we want to see a few bytes of the memory at the address referred to by the ‘mov eax, addr’ instruction. We can do that without jumping to it, using a sequence of commands:

    And of course it’s possible to redirect the output of an r2 command into a file, using the > and >> commands

    1. [0x00404800]> px 10 @ `ao~ptr[1]` > example.txt
    2. [0x00404800]> px 10 @ `ao~ptr[1]` >> example.txt

    Radare2 also provides quite a few Unix type file processing commands like head, tail, cat, grep and many more. One such command is , which can be used to filter a file to display only non-duplicate content. So to make a new file with only unique strings, you can do:

    2. 1 Protein
    3. 3 Fat
    4. [0x00404800]> tail 2 foodtypes.txt
    5. 3 Shake
    6. 4 Milk

    The join command could be used to merge two different files with common first field.

    Similarly, sorting the content is also possible with the command. A typical example could be:

    1. [0x00404800]> sort file
    3. five
    4. great
    5. one
    6. one

    The ?$? command describes several helpful variables you can use to do similar actions even more easily, like the $v “immediate value” variable, or the $m opcode memory reference variable.