rmlint: add page (#9090)

pages/common/rmlint.md

@@ -0,0 +1,32 @@
+# rmlint
+
+> Identify duplicate files or directories, and other filesystem issues.
+> More information: <https://rmlint.readthedocs.io/en/latest/rmlint.1.html>.
+
+- Check a directory for duplicates, empty files, and other issues:
+
+`rmlint {{path/to/directory}}`
+
+- Delete duplicate files found by an execution of `rmlint`:
+
+`./rmlint.sh`
+
+- Find duplicate directory trees:
+
+`rmlint --merge-directories {{path/to/directory}}`
+
+- Mark files at lower path [d]epth as originals:
+
+`rmlint --rank-by={{d}} {{path/to/directory}}`
+
+- Mark files with shortest name [l]ength as originals:
+
+`rmlint --rank-by={{l}} {{path/to/directory}}`
+
+- Find only duplicates that have the same filename in addition to the same contents:
+
+`rmlint --match-basename {{path/to/directory}}`
+
+- Find all duplicates with the same extension:
+
+`rmlint --match-extension {{path/to/directory}}`