阿里云服务器apt-get update出现错误（已解决）

apt-get update
Reading package lists... Done
W: chmod 0700 of directory /var/lib/apt/lists/partial failed - SetupAPTPartialDirectory (1: Operation not permitted)
E: Could not open lock file /var/lib/apt/lists/lock - open (13: Permission denied)
E: Unable to lock directory /var/lib/apt/lists/
W: Problem unlinking the file /var/cache/apt/pkgcache.bin - RemoveCaches (13: Permission denied)
W: Problem unlinking th

如题所示，在服务器中更新输入命令apt-get update，结果出错。

问题在于权限，可以加上sudo，这样就能成功运行了。

就是这么简单，至于底层的原理，有时间再研究

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2018-12-10 14:40:15写于杭州庆春路