linux运维 - linux free -h的结果中，buff/cache是什么意思？也是空闲的内存吗？

Question

如下图所示，free和buff/cache有什么区别呢？

Answer 1

View free(1) - Linux manual page

free - Unused memory (MemFree and SwapFree in /proc/meminfo) Unused memory, including swap area
buff/cache - Sum of buffers and cache The total size of buffers and cache

free - Display amount of free and used memory in the system