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#include "ulib/stdio.h" #include "user/user.h" int main(int argc, char* argv[]) { if (argc < 2) { printf("Usage: mkdir <dirname> ...\n"); exit(1); } for (int i = 1; i < argc; i++) { if (mkdir(argv[i]) < 0) { printf("mkdir: cannot create directory '%s'\n", argv[i]); } } exit(0); }