level2.c

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

int main(int argc, char *argv[])
{
char *buffer = malloc(sizeof(char)*(strlen("man ")+strlen(argv[1])+1));

if(argc<2 || strlen(argv[1])>50) {
printf("Manpage <argument>\n");
exit(0);
}

strcpy(buffer, "man ");
strcat(buffer, argv[1]);

system(buffer);
return 0;
}