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15 lines
508 B
Bash
15 lines
508 B
Bash
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#!/bin/bash
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awkCmd=`which awk`
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catCmd=`which cat`
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grepCmd=`which grep`
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memInfoFile="/proc/meminfo"
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# References:
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# Calculations: http://zcentric.com/2012/05/29/mapping-procmeminfo-to-output-of-free-command/
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# Fields: https://www.kernel.org/doc/Documentation/filesystems/proc.txt
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memInfo=`$catCmd $memInfoFile | $grepCmd 'MemTotal\|MemFree\|Buffers\|Cached'`
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echo $memInfo | $awkCmd '{print "{ \"total\": " ($2/1024) ", \"used\": " ( ($2-($5+$8+$11))/1024 ) ", \"free\": " (($5+$8+$11)/1024) " }" }'
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