[ teemu@leivopad ~ ]$ cd a
[ teemu@leivopad ~/a ]$ tree
.
└── b/

1 directory, 0 files
[ teemu@leivopad ~/a ]$ tree -l
.
└── b/

1 directory, 0 files
[ teemu@leivopad ~/a ]$ tree -a
.
└── b/
    ├── .a
    ├── .b
    └── .c

1 directory, 3 files
[ teemu@leivopad ~/a ]$ cd b/
[ teemu@leivopad ~/a/b ]$ LANG=C rm -rfv .*
rm: refusing to remove '.' or '..' directory: skipping '.'
rm: refusing to remove '.' or '..' directory: skipping '..'
removed '.a'
removed '.b'
removed '.c'
[ teemu@leivopad ~/a/b ]$