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apt-key
===
管理Debian Linux系统中的软件包密钥
## 补充说明
**apt-key命令** 用于管理Debian Linux系统中的软件包密钥。每个发布的deb包都是通过密钥认证的apt-key用来管理密钥。
### 语法
```
apt-key(参数)
```
### 参数
操作指令APT密钥操作指令。
### 实例
```
apt-key list #列出已保存在系统中key。
apt-key add keyname #把下载的key添加到本地trusted数据库中。
apt-key del keyname #从本地trusted数据库删除key。
apt-key update #更新本地trusted数据库删除过期没用的key。
```
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