1 files changed, 24 insertions, 0 deletions
diff --git a/nixos/modules/installer/tools/nixos-version.sh b/nixos/modules/installer/tools/nixos-version.sh
new file mode 100644
index 00000000000..59a9c572b41
--- /dev/null
+++ b/nixos/modules/installer/tools/nixos-version.sh
@@ -0,0 +1,24 @@
+#! @runtimeShell@
+# shellcheck shell=bash
+
+case "$1" in
+  -h|--help)
+    exec man nixos-version
+    exit 1
+    ;;
+  --hash|--revision)
+    if ! [[ @revision@ =~ ^[0-9a-f]+$ ]]; then
+      echo "$0: Nixpkgs commit hash is unknown"
+      exit 1
+    fi
+    echo "@revision@"
+    ;;
+  --json)
+    cat <<EOF
+@json@
+EOF
+    ;;
+  *)
+    echo "@version@ (@codeName@)"
+    ;;
+esac