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6年前关闭。
我使用mac机器，我对mac的清除命令的概念很好奇。
当我执行这个命令时，它会释放一些像垃圾一样的记忆（真的是对的吗？）
这学期我学习了“系统编程”中的虚拟内存概念，但我不知道这种清除是如何做到的。
所以我的问题是
如何清除仍在使用的内存块和垃圾？
C语言中是否有小的实现或相同的功能？
最佳答案：
你让我好奇，因为我不知道什么是清除命令，所以我在终端上键入man purge：
NAME
purge -- force disk cache to be purged (flushed and emptied)
SYNOPSIS
purge
DESCRIPTION
Purge can be used to approximate initial boot conditions with a cold disk
buffer cache for performance analysis. It does not affect anonymous mem-
ory that has been allocated through malloc, vm_allocate, etc.
SEE ALSO
sync(8), malloc(3)
所以它删除缓存。
