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ssh-add
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===
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把专用密钥添加到ssh-agent的高速缓存中
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## 说明
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**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`。
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### 语法
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```
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ssh-add [-cDdLlXx] [-t life] [file ...]
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ssh-add -s pkcs11
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ssh-add -e pkcs11
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```
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```
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-D：删除ssh-agent中的所有密钥.
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-d：从ssh-agent中的删除密钥
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-e pkcs11：删除PKCS#11共享库pkcs1提供的钥匙。
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-s pkcs11：添加PKCS#11共享库pkcs1提供的钥匙。
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-L：显示ssh-agent中的公钥
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-l：显示ssh-agent中的密钥
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-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
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-X：对ssh-agent进行解锁
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-x：对ssh-agent进行加锁
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```
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### 实例
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1、把专用密钥添加到 ssh-agent 的高速缓存中：
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```
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ssh-add ~/.ssh/id_dsa
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```
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2、从ssh-agent中删除密钥：
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```
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ssh-add -d ~/.ssh/id_xxx.pub
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```
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3、查看ssh-agent中的密钥：
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```
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ssh-add -l
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```
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