From the system call count, there were several calls to read, write, close, and stat that didn't appear before.

从系统调用计数中可以看出，有一些以前没有出现过的调用，包括read、write、close和stat。

youdao

Before liberation many people could not read or write.

解放前，许多人不会读书，也不会写字。

youdao

If a program has a file open before the fork, what happens if both processes try a read or a write?

如果在调用fork前，某个程序已经打开了一个文件，如果两个进程都尝试执行读取或写入，会发生什么情况呢？

youdao