int main(int argc, char **argv, char **env)
{
char *key, *val;
dump_environ();
Dump_environ();
/*
while( *environ )
{
key = strtok_r(*environ++, "=", &val);
//printf("%s\n", *environ++);
printf("%-*s=%s\n>>>%s<<<\n", 16, key, val, *env++);
}
*/
}
int
main(int argc, char **argv)
{
char arg;
const char *eol = "\n";
const char *value;
static char *emptyEnv[] = { NULL };
static char *staticEnv[] = { "FOO=bar", NULL };
if (argc == 1) {
usage(argv[0]);
exit(EXIT_FAILURE);
}
/* The entire program is basically executed from this loop. */
while ((arg = getopt(argc, argv, "DGS:Ub:c:g:hp:rs:tu:")) != -1) {
switch (arg) {
case 'b':
blank_env(optarg);
break;
case 'c':
switch (atoi(optarg)) {
case 1:
environ = NULL;
break;
case 2:
environ[0] = NULL;
break;
case 3:
environ = calloc(1, sizeof(*environ));
break;
case 4:
environ = emptyEnv;
break;
}
break;
case 'D':
dump_environ();
break;
case 'G':
case 'g':
value = getenv(arg == 'g' ? optarg : NULL);
printf("%s%s", value == NULL ? "*NULL*" : value, eol);
break;
case 'p':
print_rtrn_errno(putenv(optarg), eol);
break;
case 'r':
environ = staticEnv;
break;
case 'S':
print_rtrn_errno(setenv(NULL, optarg,
atoi(argv[optind])), eol);
optind += 1;
break;
case 's':
print_rtrn_errno(setenv(optarg, argv[optind],
atoi(argv[optind + 1])), eol);
optind += 2;
break;
case 't':
eol = " ";
break;
case 'U':
case 'u':
print_rtrn_errno(unsetenv(arg == 'u' ? optarg : NULL),
eol);
break;
case 'h':
default:
usage(argv[0]);
exit(EXIT_FAILURE);
}
}
/* Output a closing newline in test mode. */
if (eol[0] == ' ')
printf("\n");
return (EXIT_SUCCESS);
}