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tutorials/how-to-delete-keys.md

@@ -4,6 +4,35 @@ description: Describes a way to delete etcd keys
 weight: 400
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+## Prerequisites
+
+* Install [`etcd` and `etcdctl`](https://etcd.io/docs/v3.5/install/)
+
+## Add or delete keys
+
+`del` to remove the specified key or range of keys:
+
+```bash
+etcdctl del $KEY [$END_KEY]
+```
+
+### Options
+
+```bash
+--prefix[=false]: delete keys with matching prefix
+--prev-kv[=false]: return deleted key-value pairs
+--from-key[=false]: delete keys that are greater than or equal to the given key using byte compare
+--range[=false]: delete range of keys without delay
+```
+
+### Options inherited from parent commands
+
+```bash
+--endpoints="127.0.0.1:2379": gRPC endpoints
+```
+
+### Examples
+
 ![04_etcdctl_delete_2016050601](https://storage.googleapis.com/etcd/demo/04_etcdctl_delete_2016050601.gif)
 
 ```shell

tutorials/how-to-watch-keys.md

@@ -5,8 +5,35 @@ weight: 600
 ---
 
 
+## Prerequisites
+
+* Install [`etcd` and `etcdctl`](https://etcd.io/docs/v3.5/install/)
+
+## Watching keys
 `watch` to get notified of future changes:
 
+```bash
+etcdctl watch $KEY [$END_KEY]
+```
+
+### Options
+
+```bash
+-i, --interactive[=false]: interactive mode
+--prefix[=false]: watch on a prefix if prefix is set
+--rev=0: Revision to start watching
+--prev-kv[=false]: get the previous key-value pair before the event happens
+--progress-notify[=false]: get periodic watch progress notification from server
+```
+
+### Options inherited from parent commands
+
+```bash
+--endpoints="127.0.0.1:2379": gRPC endpoints
+```
+
+### Examples
+
 ![06_etcdctl_watch_2016050501](https://storage.googleapis.com/etcd/demo/06_etcdctl_watch_2016050501.gif)
 
 ```shell