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| free -m | \ | |
| awk ' | |
| { | |
| if (NR==1) { | |
| if (/cached$/) { | |
| vesion=0 | |
| } else { | |
| version=1 | |
| } | |
| } else { | |
| if (/^Mem/) { | |
| if (version==0) { | |
| usage1 = ($3 - $6 - $7) / $2 * 100 | |
| print "memory usage: " usage1 | |
| } else { | |
| usage2 = ($2 - $7) / $2 * 100 | |
| print "memory usage: " usage2 | |
| } | |
| } | |
| } | |
| }' |
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