LiveOverFlow

URL: http://liveoverflow.com/binary\_hacking/

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0x02

Simple C Program

#include <stdio.h>

int main(int argc, char *argv[]){
    if(argc==2) {
    printf("Knock, knock, %s\n", argv[1]);
    } else {
        fprintf(stderr, "Usage: %s <name>\n", argv[0]);
        return 1;
    }
    return 0;
}