Add polybar scripts

.local/bin/polybar/poly-networkspeed

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+INTERVAL=3
+INTERFACES="enp6s0 wlp0s29u1u1"
+
+print_bytes() {
+  if [ "$1" -eq 0 ] || [ "$1" -lt 1000 ]; then
+    bytes="0"
+  elif [ "$1" -lt 1000000 ]; then
+    bytes="$(echo "scale=0;$1/1000" | bc -l)k"
+  else
+    bytes="$(echo "scale=1;$1/1000000" | bc -l)M"
+  fi
+
+  echo "$bytes"
+}
+
+print_bit() {
+  if [ "$1" -eq 0 ] || [ "$1" -lt 10 ]; then
+    bit="0 B"
+  elif [ "$1" -lt 100 ]; then
+    bit="$(echo "scale=0;$1*8" | bc -l) B"
+  elif [ "$1" -lt 100000 ]; then
+    bit="$(echo "scale=0;$1*8/1000" | bc -l) K"
+  else
+    bit="$(echo "scale=1;$1*8/1000000" | bc -l) M"
+  fi
+
+  echo "$bit"
+}
+
+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
+
+  if [ "$down" -gt 1000 ] || [ "$up" -gt 1000 ]; then
+    echo " $(print_bytes $down) 祝$(print_bytes $up)"
+  else
+    echo ""
+  fi
+
+  # echo "Download: $(print_bytes $down) / Upload: $(print_bytes $up)"
+  # echo "Download: $(print_bit $down) / Upload: $(print_bit $up)"
+
+  sleep $INTERVAL
+done