echo $a
MemTotal: 16363076 kB MemFree: 2748448 kB MemAvailable: 13435572 kB Buffers: 2901144 kB Cached: 8003140 kB SwapCached: 0 kB Active: 5663016 kB Inactive: 7381104 kB Active(anon): 1875588 kB Inactive(anon): 373124 kB Active(file): 3787428 kB Inactive(file): 7007980 kB Unevictable: 64 kB Mlocked: 64 kB SwapTotal: 19530748 kB SwapFree: 19530748 kB Dirty: 484 kB Writeback: 0 kB AnonPages: 2138324 kB Mapped: 584708 kB Shmem: 108692 kB Slab: 320560 kB SReclaimable: 237964 kB SUnreclaim: 82596 kB KernelStack: 13600 kB PageTables: 47292 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB C…