二进制数据以String形式注入

char s[256];
int num, fd;
string command;

command.erase(); //Clear the command string
cout << \"Command0:\" << endl << command << endl;
fd = open(FIFO_NAME, O_RDONLY); //Will block until a writer connects
do {
    if ((num = read(fd, s, 255)) == -1)
        perror(\"read\");
    else {
        cout << \"Command1:\" << endl << command << endl;
        s[num+1] = \'\\0\';
        cout << \"Command2:\" << endl << command << endl;
        //printf(\"read %d bytes: \\\"%s\\\"\\n\", num, s);
        command += s;
    }
} while (num > 0);
cout << \"Command:\" << endl << command << endl;

Command0:

Command1:

Command2: