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Refactor nettraf

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No longer relies on paste(1p).
This commit is contained in:
Gregory Chamberlain 2020-05-31 20:30:52 +01:00
parent 16874b6716
commit 63aef514d7
1 changed files with 14 additions and 8 deletions
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22
.local/bin/statusbar/nettraf
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@ -10,13 +10,19 @@ case $BLOCK_BUTTON in
6) "$TERMINAL" -e "$EDITOR" "$0" ;;
esac
logfile=${XDG_CACHE_HOME:-$HOME/.cache}/netlog
[ -f "$logfile" ] || echo "0 0" > "$logfile"
read -r rxprev txprev < "$logfile"
update() {
sum=0
for arg; do
read -r i < "$arg"
sum=$(( "$sum" + "$i" ))
done
cache=${XDG_CACHE_HOME:-$HOME/.cache}/${1##*/}
[ -f "$cache" ] && read -r old < "$cache" || old=0
printf %d\\n "$sum" > "$cache"
printf %d\\n $(( ("$sum" - "$old") / 1024 ))
}
rxcurrent=$(($(paste -d '+' /sys/class/net/[ew]*/statistics/rx_bytes)))
txcurrent=$(($(paste -d '+' /sys/class/net/[ew]*/statistics/tx_bytes)))
rx=$(update /sys/class/net/[ew]*/statistics/rx_bytes)
tx=$(update /sys/class/net/[ew]*/statistics/tx_bytes)
printf "🔻%dKiB 🔺%dKiB\\n" "$(((rxcurrent-rxprev)/1024))" "$(((txcurrent-txprev)/1024))"
echo "$rxcurrent $txcurrent" > "$logfile"
printf "🔻%dKiB 🔺%dKiB\\n" "$rx" "$tx"