V10/cmd/mkdir.c

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#include <stdio.h>

main(argc, argv)
int argc;
char **argv;
{
	int err = 0;

	if (argc <= 1) {
		fprintf(stderr, "usage: %s dir ...\n", argv[0]);
		exit(1);
	}
	while (--argc > 0)
		if (mkdir(*++argv, 0777) < 0) {
			perror(*argv);
			err = 1;
		}
	exit(err);
}