gets the RX and TX values and transform to kB/s

scripts/network_bandwith.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+INTERVAL="1"  # update interval in seconds
+
+network_name=$(tmux show-option -gqv "@dracula-network-bandwith")
+
+main() {
+  while true
+    do
+      initial_download=`cat /sys/class/net/$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 "scale=2; $total_download_bps / 1024" | bc)
+      total_upload_kbps=$(echo "scale=2; $total_upload_bps / 1024" | bc)
+
+      echo "↑ $total_upload_kbps kB/s • ↓ $total_download_kbps kB/s"
+    done
+}
+main