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| #include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#define ARE_EQUAL 0
void usage (char const *progname);
int main (int argc, char **argv)
{
int option;
int err = EXIT_SUCCESS;
char const *options = "g:";
opterr = 0;
while ((option = getopt (argc, argv, options)) != -1)
{
switch (option)
{
case 'g':
if (strncmp ("src", optarg, 3) == ARE_EQUAL)
{
/* do what you want here */
}
else if(strncmp ("ports", optarg, 5) == ARE_EQUAL)
{
/* do what you want here */
}
else if(strncmp ("all", optarg, 3) == ARE_EQUAL)
{
/* do what you want here */
}
else
{
printf ("option %c %s incorrect\n", optopt, optarg);
usage(argv[0]);
err = EXIT_FAILURE;
}
break;
case '?':
printf ("option %c incorrect\n", optopt);
usage(argv[0]);
err = EXIT_FAILURE;
break;
}
}
return err;
}
void usage (char const *progname)
{
fprintf (stderr,
"usage: %s [-g [src | ports | all]]\n"
" %s [-u [src | ports | all]]\n"
" %s [-c [kernel | userland]]\n"
" %s [-i [kernel]]\n"
, progname, progname, progname, progname);
} |
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