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minimize file writes and use built-in arithmatic

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Luke Smith 2020-05-29 16:03:19 -04:00
parent 406bb4faa7
commit 1379747a17
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GPG key ID: 4C50B54A911F6252
1 changed files with 7 additions and 9 deletions
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16
.local/bin/statusbar/nettraf
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@ -10,16 +10,14 @@ case "$BLOCK_BUTTON" in
6) "$TERMINAL" -e "$EDITOR" "$0" ;;
esac
rxfile="${XDG_CACHE_HOME:-$HOME/.cache}/rxlog"
txfile="${XDG_CACHE_HOME:-$HOME/.cache}/txlog"
logfile="${XDG_CACHE_HOME:-$HOME/.cache}/netlog"
prevdata="$(cat "$logfile")"
rxcurrent="$(cat /sys/class/net/*/statistics/rx_bytes | paste -sd '+' | bc)"
txcurrent="$(cat /sys/class/net/*/statistics/tx_bytes | paste -sd '+' | bc)"
rxcurrent="$(($(cat /sys/class/net/*/statistics/rx_bytes | paste -sd '+')))"
txcurrent="$(($(cat /sys/class/net/*/statistics/tx_bytes | paste -sd '+')))"
printf "🔻%sKiB 🔺%sKiB\\n" \
"$(printf -- "(%s-%s)/1024\\n" "$rxcurrent" "$(cat "$rxfile")" | bc)" \
"$(printf -- "(%s-%s)/1024\\n" "$txcurrent" "$(cat "$txfile")" | bc)"
"$(((rxcurrent-${prevdata%% *})/1024))" \
"$(((txcurrent-${prevdata##* })/1024))"
# Log the current values for next run.
echo "$rxcurrent" > "$rxfile"
echo "$txcurrent" > "$txfile"
echo "$rxcurrent $txcurrent" > "$logfile"