# ssh-add

把专用密钥添加到ssh-agent的高速缓存中

## 补充说明

**ssh-add命令** 是把专用密钥添加到ssh-agent的高速缓存中。该命令位置在`/usr/bin/ssh-add`。

### 语法

```
ssh-add [-cDdLlXx] [-t life] [file ...]
ssh-add -s pkcs11
ssh-add -e pkcs11
```

### 选项

```
-D：删除ssh-agent中的所有密钥.
-d：从ssh-agent中的删除密钥
-e pkcs11：删除PKCS#11共享库pkcs1提供的钥匙。
-s pkcs11：添加PKCS#11共享库pkcs1提供的钥匙。
-L：显示ssh-agent中的公钥
-l：显示ssh-agent中的密钥
-t life：对加载的密钥设置超时时间，超时ssh-agent将自动卸载密钥
-X：对ssh-agent进行解锁
-x：对ssh-agent进行加锁
```

### 实例

1、把专用密钥添加到 ssh-agent 的高速缓存中：

```
ssh-add ~/.ssh/id_dsa
```

2、从ssh-agent中删除密钥：

```
ssh-add -d ~/.ssh/id_xxx.pub
```

3、查看ssh-agent中的密钥：

```
ssh-add -l
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://hezhiqiang.gitbook.io/linux/ming-ling/ssh-add.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.