voidrice/.local/bin/statusbar/nettraf

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#!/bin/sh
# Module showing network traffic. Shows how much data has been received (RX) or
# transmitted (TX) since the previous time this script ran. So if run every
# second, gives network traffic per second.
case "$BLOCK_BUTTON" in
3) notify-send "🌐 Network traffic module" "🔻: Traffic received
🔺: Traffic transmitted" ;;
6) "$TERMINAL" -e "$EDITOR" "$0" ;;
esac
logfile="${XDG_CACHE_HOME:-$HOME/.cache}/netlog"
prevdata="$(cat "$logfile")"
rxcurrent="$(($(cat /sys/class/net/*/statistics/rx_bytes | paste -sd '+')))"
txcurrent="$(($(cat /sys/class/net/*/statistics/tx_bytes | paste -sd '+')))"
printf "🔻%sKiB 🔺%sKiB\\n" \
"$(((rxcurrent-${prevdata%% *})/1024))" \
"$(((txcurrent-${prevdata##* })/1024))"
echo "$rxcurrent $txcurrent" > "$logfile"