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% ls -s /
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#include
int main (int argc, char* argv[])
{
    printf (“The name of this program is ‘%s’.\n”, argv[0]);
    printf (“This program was invoked with %d arguments.\n”, argc - 1);
    /* Were any command-line arguments specified? */
    if (argc > 1) {
        /* Yes, print them. */
        int i;
        printf (“The arguments are:\n”);
        for (i = 1; i < argc; ++i)
            printf ("%s\n", argv[i]);
    }
    return 0;
}
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-h
--help
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-o filename
--output filename
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-v
--verbose
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Include .
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µÚÒ»¸öÊý¾Ý½á¹¹Ò»ÊÇÒ»¸ö×Ö·û´®£¬°üº¬ËùÓеĶ̸ñʽѡÏÿ¸öÑ¡ÏîÒ»¸ö×Öĸ¡£ÐèÒª¸úÒ»¸ö²ÎÊýµÄÑ¡ÏîºóÃæÓÐÒ»¸öðºÅ¡£char* const short_options = “ho:v”;
µÚ¶þ¸öÊý¾Ý½á¹¹ÊÇÒ»¸öoption½á¹¹Ìå×é³ÉµÄÊý×é¡£Êý×éÖеÄÿһÏî¶ÔÓ¦Ò»¸ö³¤Ñ¡Ï°üÀ¨ËĸöÓò£º
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const struct option long_options[] = {
{ “help”, 0, NULL, ‘h&rs


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