在Debian安装mysql时，报错

apt-get install mysql-server-5.0 mysql-common

The following NEW packages will be installed:
libdbd-mysql-perl libmysqlclient15off mysql-client-5.0 mysql-common mysql-server-5.0
0 upgraded, 5 newly installed, 0 to remove and 0 not upgraded.
E: Archive directory /var/cache/apt/archives/partial is missing.

原因

可能在删除.deb安装文件时，把/var/cache/apt/archives目录删了。
只要重新创建就好。

使用root创建：

# mkdir -p /var/cache/apt/archives/partial
# apt-get autoclean

apt-get autoclean表示清除本地本地存储的软件包文件。

再次安装mysql

# apt-get install mysql-server-5.0 mysql-common