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Improve bash used in bwrate script
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parent
c45becdd5c
commit
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1 changed files with 15 additions and 16 deletions
31
bwrate
31
bwrate
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@ -1,27 +1,26 @@
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#!/usr/bin/env bash
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TIMESPAN=1
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timespan=1
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if [ -z $1 ]; then
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echo "Error: no device specified"
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[[ -z "$1" ]] && {
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printf '%s\n' 'Error: no device specified'
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exit 1
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fi
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if [ ! -d /sys/class/net/$1 ]; then
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echo "No such device: $1"
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}
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[[ ! -d "/sys/class/net/$1" ]] && {
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printf '%s\n' "No such device: $1"
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exit 1
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fi
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}
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BR1=`cat /sys/class/net/$1/statistics/rx_bytes`
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BT1=`cat /sys/class/net/$1/statistics/tx_bytes`
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br1=$(</sys/class/net/"$1"/statistics/rx_bytes)
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bt1=$(</sys/class/net/"$1"/statistics/tx_bytes)
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sleep $TIMESPAN
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sleep $timespan
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BR2=`cat /sys/class/net/$1/statistics/rx_bytes`
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BT2=`cat /sys/class/net/$1/statistics/tx_bytes`
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br2=$(cat /sys/class/net/"$1"/statistics/rx_bytes)
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bt2=$(cat /sys/class/net/"$1"/statistics/tx_bytes)
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DOWNKB=$(((($BR2-$BR1) / $TIMESPAN) /1024))
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UPKB=$(((($BT2-$BT1) / $TIMESPAN) /1024))
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u_speed=$(( ( ( bt2 - bt1 ) / timespan ) / 1024 ))
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d_speed=$(( ( ( br2 - br1 ) / timespan ) / 1024 ))
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echo "D ${DOWNKB}KB/s | U ${UPKB}KB/s"
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printf '%s\n' "D ${d_speed}KB/s | U ${u_speed}KB/s"
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exit 0
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