clean up scripts

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

@@ -0,0 +1,61 @@
+#!/bin/bash
+
+print_bytes() {
+    if [ "$1" -eq 0 ] || [ "$1" -lt 1000 ]; then
+        bytes="0 kB/s"
+    elif [ "$1" -lt 1000000 ]; then
+        bytes="$(echo "$1/1000" | bc -l | LANG=C xargs printf "%.f\n") kB/s"
+    else
+        bytes="$(echo "$1/1000000" | bc -l | LANG=C xargs printf "%.1f\n") MB/s"
+    fi
+
+    echo "$bytes"
+}
+
+print_bit() {
+    if [ "$1" -eq 0 ] || [ "$1" -lt 10 ]; then
+        bit="0 B"
+    elif [ "$1" -lt 100 ]; then
+        bit="$(echo "$1*8" | bc -l | LANG=C xargs printf "%.f\n") B"
+    elif [ "$1" -lt 100000 ]; then
+        bit="$(echo "$1*8/1000" | bc -l | LANG=C xargs printf "%.f\n") K"
+    else
+        bit="$(echo "$1*8/1000000" | bc -l | LANG=C xargs printf "%.1f\n") M"
+    fi
+
+    echo "$bit"
+}
+
+INTERVAL=10
+INTERFACES="enp0s25 wlp3s0"
+
+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 "Download: $(print_bytes $down) / Upload: $(print_bytes $up)"
+    # echo "Download: $(print_bit $down) / Upload: $(print_bit $up)"
+
+    sleep $INTERVAL
+done