diff --git a/tools/sign.fish b/tools/sign.fish
new file mode 100755
index 0000000..ce9d26b
--- /dev/null
+++ b/tools/sign.fish
@@ -0,0 +1,22 @@
+#!/usr/bin/fish
+
+function dosign
+    if test 2 -gt (count {$argv})
+        echo "dosign:"
+        echo "用法: dosign [KEY] [FILES]..."
+        echo "参数:"
+        echo "    [KEY]      指定用于签名的密钥。"
+        echo "    [FILES]... 要签名的目标文件。"
+        return 1
+    end
+
+    for target in {$argv[2..]}
+        echo "sign: $target"
+        gpg --local-user {$argv[1]} --detach-sign {$target}
+    end
+end
+
+if test 2 -le (count {$argv})
+    echo "使用参数 $argv 运行 dosign…"
+    dosign {$argv}
+end