症状:cp: 无法创建目录 ‘’: 设备上没有空间
sudo su
cd /
ls
df -h
很明显,得从 / 根目录着手
du -h --max-depth=1 | grep -v K | grep -v M
这里最大的是./usr/ 其他的看起来正常
cd /usr
样子在 ./share 里面
cd sharedu -h --max-depth=1 | grep -v K | grep -v M
明白了,前几天 Android SDK 下载多了,导致没内存了,自行处理吧!

Linux 命令大全 引用于 https://www.runoob.com/linux/linux-comm-du.html 菜鸟教程
Linux du (英文全拼:disk usage)命令用于显示目录或文件的大小。
du 会显示指定的目录或文件所占用的磁盘空间。
du [-abcDhHklmsSx][-L <符号连接>][-X <文件>][--block-size][--exclude=<目录或文件>][--max-depth=<目录层数>][--help][--version][目录或文件]参数说明:
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