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#!/bin/bash
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read cpu a b c previdle rest < /proc/stat
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prevtotal=$((a+b+c+previdle))
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sleep 0.5
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read cpu a b c idle rest < /proc/stat
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total=$((a+b+c+idle))
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cpu=$((100*( (total-prevtotal) - (idle-previdle) ) / (total-prevtotal) ))
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icon=""
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printf " %s %s \\n" "$icon" "$cpu%"
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