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| == linux 进程管理api == * fork 创建新进程 * exec* 用一个新的程序代替当前运行的进程 * wait 等待子进程结束 == 内存管理 == * [[https://en.wikipedia.org/wiki/Sbrk|sbrk]]：sbrk是一个Unix系统调用，用来改变进程数据段的大小，是很多内存分配程序（malloc）的基础之一（另一个是mmap） * [[https://en.wikipedia.org/wiki/Unikernel|Unikernel]] a library OS |