如下图所示，free和buff/cache有什么区别呢？
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View free(1) - Linux manual page
free - Unused memory (MemFree and SwapFree in /proc/meminfo) Unused memory, including swap areabuff/cache - Sum of buffers and cache The total size of buffers and cache
free - Display amount of free and used memory in the system
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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