i3-gaps, polybar

.config/polybar/polybar-network-traffic/network-traffic.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+print_bytes() {
+    #if [ "$1" -eq 0 ] || [ "$1" -lt 100 ]; then
+    #    bytes="0 kB/s"
+    #elif [ "$1" -lt 1000 ]; then
+    #    bytes="0$(echo "scale=1;$1/1000" | bc -l ) kB/s"
+    if [ "$1" -eq 0 ] || [ "$1" -lt 1000 ]; then
+        bytes="0 kB/s"
+    elif [ "$1" -lt 1000000 ]; then
+        bytes="$(echo "scale=0;$1/1000" | bc -l ) kB/s"
+    else
+        bytes="$(echo "scale=1;$1/1000000" | bc -l ) MB/s"
+    fi
+
+    echo "$bytes"
+}
+
+INTERVAL=10
+INTERFACES="wlp6s0"
+
+declare -A bytes
+
+for interface in $INTERFACES; do
+    bytes[past_rx_$interface]="$(cat /sys/class/net/"$interface"/statistics/rx_bytes)"
+    bytes[past_tx_$interface]="$(cat /sys/class/net/"$interface"/statistics/tx_bytes)"
+done
+
+while true; do
+    down=0
+    up=0
+
+    for interface in $INTERFACES; do
+        bytes[now_rx_$interface]="$(cat /sys/class/net/"$interface"/statistics/rx_bytes)"
+        bytes[now_tx_$interface]="$(cat /sys/class/net/"$interface"/statistics/tx_bytes)"
+
+        bytes_down=$((((${bytes[now_rx_$interface]} - ${bytes[past_rx_$interface]})) / INTERVAL))
+        bytes_up=$((((${bytes[now_tx_$interface]} - ${bytes[past_tx_$interface]})) / INTERVAL))
+
+        down=$(((( "$down" + "$bytes_down" ))))
+        up=$(((( "$up" + "$bytes_up" ))))
+
+        bytes[past_rx_$interface]=${bytes[now_rx_$interface]}
+        bytes[past_tx_$interface]=${bytes[now_tx_$interface]}
+    done
+
+    echo " $(print_bytes $down) 祝 $(print_bytes $up)"
+
+    sleep $INTERVAL
+done