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-rw-r--r--src/nix-env/help.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/nix-env/help.txt b/src/nix-env/help.txt
index 3832f1655b..9a772fc833 100644
--- a/src/nix-env/help.txt
+++ b/src/nix-env/help.txt
@@ -13,6 +13,10 @@ The previous operations take a list of derivation names.  The special
 name `*' may be used to indicate all derivations.
 
   --switch-profile / -S [FILE]: switch to specified profile
+  --switch-generation / -G NUMBER: switch to specified generation of profile
+  --rollback: switch to the previous generation
+  --list-generations: list available generations of a profile
+  
   --import / -I FILE: set default Nix expression
 
   --version: output version information