rmdir: add/refresh pages (#7993)

* Create `rmdir` copy with long options

* Refresh pages:
- update title
- add `See also` link
- use brace expansion in examples
- refresh descriptions

* Use imperative mood in titles

* Don't use brace expansion

pages/common/rmdir.md

@@ -1,12 +1,13 @@
 # rmdir
 
-> Removes a directory.
+> Remove directories without files.
+> See also: `rm`.
 > More information: <https://www.gnu.org/software/coreutils/rmdir>.
 
-- Remove directory, provided it is empty. Use `rm -r` to remove non-empty directories:
+- Remove specific directories:
 
-`rmdir {{path/to/directory}}`
+`rmdir {{path/to/directory1 path/to/directory2 ...}}`
 
-- Remove the target and its parent directories (useful for nested dirs):
+- Remove specific nested directories recursively:
 
-`rmdir -p {{path/to/directory}}`
+`rmdir -p {{path/to/directory1 path/to/directory2 ...}}`

pages/linux/rmdir.md

@@ -0,0 +1,13 @@
+# rmdir
+
+> Remove directories without files.
+> See also: `rm`.
+> More information: <https://www.gnu.org/software/coreutils/rmdir>.
+
+- Remove specific directories:
+
+`rmdir {{path/to/directory1 path/to/directory2 ...}}`
+
+- Remove specific nested directories recursively:
+
+`rmdir --parents {{path/to/directory1 path/to/directory2 ...}}`