1. type=dir 2./a type=dir 3./a/change-dir-to-link type=link mode=0755 4./b type=dir 5./b/change-link-to-dir type=dir mode=0755 6./c type=dir 7./c/aaa type=file 8./c/zzz type=file 9./c/change-dir-to-link type=link mode=0755 10./d type=dir 11./d/aaa type=file 12./d/zzz type=file 13./d/change-link-to-dir type=dir mode=0755 14