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Find env variables
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#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
int main(int argc, char *argv[]) { | |
char *ptr; | |
if(argc < 3) { | |
printf("Usage: %s <environment var> <target program name>\n", argv[0]); | |
exit(0); | |
} | |
ptr = getenv(argv[1]); /* Get env var location. */ | |
ptr += (strlen(argv[0]) - strlen(argv[2]))*2; /* Adjust for program name. */ | |
printf("%s will be at %p\n", argv[1], ptr); | |
} |
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