tmux-kanagawa/scripts/network_bandwidth.sh

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#!/usr/bin/env bash
INTERVAL="1" # update interval in seconds
network_name=$(tmux show-option -gqv "@dracula-network-bandwidth")
main() {
while true
do
initial_download=$(cat /sys/class/net/$network_name/statistics/rx_bytes)
initial_upload=$(cat /sys/class/net/$network_name/statistics/tx_bytes)
sleep $INTERVAL
final_download=$(cat /sys/class/net/$network_name/statistics/rx_bytes)
final_upload=$(cat /sys/class/net/$network_name/statistics/tx_bytes)
total_download_bps=$(expr $final_download - $initial_download)
total_upload_bps=$(expr $final_upload - $initial_upload)
total_download_kbps=$(echo "$total_download_bps 1024" | awk '{printf "%.2f \n", $1/$2}')
total_upload_kbps=$(echo "$total_upload_bps 1024" | awk '{printf "%.2f \n", $1/$2}')
echo "$total_download_kbps kB/s • ↑ $total_upload_kbps kB/s"
done
}
main