deduplicate with rdfind

system/deduplicate.md

@@ -0,0 +1,19 @@
+---
+title: "deduplicate"
+tags: [ "system", "deduplicate", "duplicates", "maintenance" ]
+---
+
+`rdfind`: find duplicate files, then delete them, or turn them into links.
+
+Ask if a directory has duplicates (`rdfind` will not delete anything):
+
+```bash
+rdfind $dir
+$EDITOR results.txt
+```
+
+Replace the duplicated files with [hard links](../basics/hard_links.md).
+
+```bash
+rdfind -makehardlinks true $dir
+```