36 lines
1.0 KiB
Bash
Executable File
36 lines
1.0 KiB
Bash
Executable File
#!/bin/sh
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# Module showing network traffic. Shows how much data has been received (RX) or
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# transmitted (TX) since the previous time this script ran. So if run every
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# second, gives network traffic per second.
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lasttime=${XDG_CACHE_HOME:-$HOME/.cache}/nettraf_time
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#lasttime="$NETTRAF_TIME"
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update() {
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sum=0
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for arg; do
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read -r i < "$arg"
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sum=$(( sum + i ))
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done
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cache=${XDG_CACHE_HOME:-$HOME/.cache}/${1##*/}
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[ -f "$cache" ] && read -r old < "$cache" || old=0
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printf %d\\n "$sum" > "$cache"
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printf %d\\n $(( sum - old ))
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}
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[ -f "$lasttime" ] && read -r previoustime < "$lasttime" || previoustime=0
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rx=$(update /sys/class/net/[ew]*/statistics/rx_bytes)
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tx=$(update /sys/class/net/[ew]*/statistics/tx_bytes)
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timedifference=$(( $(date +'%s') - previoustime ))
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if [ "$timedifference" -gt 0 ]; then
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rx_avg=$(( rx / timedifference ))
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tx_avg=$(( tx / timedifference ))
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else
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rx_avg=$rx
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tx_avg=$tx
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fi
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printf '⬇%s ⬆%s\n' "$(numfmt --to=iec "$rx_avg")" "$(numfmt --to=iec "$tx_avg")"
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date +'%s' > "$lasttime"
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