还记得去dc的那个周末真的是快疯了，往返路上哭着写cs，跑到教授办公室想要drop，最后还是挺过来了。急匆匆赶出来的Macy‘s marketing plan还拿了很高的分，但这周，我是真的要不行了…matlab完全不理解这教授要我们干嘛，春假前一周得取消trip还得同时来三个midterm+一个mba课的final，why do i overload why why why

We were never official. You loved me only in private and I loved you in discreet. My heart pound like thunderstorm and yours can only whisper. Sometimes I wonder if I were even enough to be adored like I am loved and forget that I was placed only in the corners almost often overlooked. I want to be the one you marvel at a little longer and steal a few glances more, the one you'd tell your friends about while the glitters in your eyes dance. I want my name to be spoken like a promise putting the stars to shame. But there was not an us and I was never in the position to ask. We were never really in love and I was not entitled to hope.

We never made it to being official, but why does my heart break so loud it sounded like a thousand explosions and we could call it a thousand names but love.
– Aly Hiraeth

Artwork: Jescelle Jan Marie Navalta https://t.cn/z8q2Luw

什么是文件系统，不查资料的话，自己能给出一个定义么？

这里讲了，文件系统就是一堆文件和目录按一定的规则组合在一起的集合。
所以我们知道，在磁盘上划了分区之后，不同的分区上可以安装不同的文件系统，就是说不同的分区上文件(广义)的组织方式可以不同, 比如/dev/sdb1上ext3, /dev/sdb2上装overlay
另外，定义里没说文件系统一定是要在持久化设备上。比如Linux里头有大量的内存文件系统, e.g., proc, sockfs, pipefs, tmpfs, rootfs, ramfs etc.

所以我们平时窥视内核数据结构的proc文件系统本质上来说也就是一堆存在于内存当中的文件(file, inode, dentry)的集合