#include <stdio.h>
#include <string.h>

main(int argc, char **argv) {
    FILE *f;
    char key[64];
    char s[512];

    strncpy(key, *++argv, 63);
    f = fopen(*++argv, "r");
    while (fgets(s, 511, f) != NULL) {
        if (strstr(s, key)) {
            printf(s);
        }
    }
}