Using the the free command: % free total used free shared buffers cached Mem: 2061712 490924 1570788 0 60984 220236 -/+ buffers/cache: 209704 1852008 Swap: 587768 0 587768 Based on this output we grab the line with Mem and using awk pick specific fields for our computations. This will report the percentage of memory in  Full Article…