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-rw-r--r--src/nix-store/help.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/nix-store/help.txt b/src/nix-store/help.txt
index 0662f67962c7..14b83a06ca9e 100644
--- a/src/nix-store/help.txt
+++ b/src/nix-store/help.txt
@@ -21,6 +21,7 @@ Operations:
 
   --init: initialise the Nix database
   --verify: verify Nix structures
+  --optimise: optimise the Nix store by hard-linking identical files
 
   --version: output version information
   --help: display help