dotfiles/.config/polybar/scripts/poly-networkspeed

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#!/bin/bash
INTERVAL=3
# interfaces for desktop and laptop
INTERFACES="enp6s0 wlp0s29u1u1 wlp56s0"
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
get_initial_throughput() {
for interface in $INTERFACES; do
local dir="/sys/class/net/$interface"
if [ -d "$dir" ]; then
bytes[past_rx_$interface]="$(cat "$dir"/statistics/rx_bytes)"
bytes[past_tx_$interface]="$(cat "$dir"/statistics/tx_bytes)"
fi
done
}
get_throughput() {
while true; do
down=0
up=0
for interface in $INTERFACES; do
local dir="/sys/class/net/$interface"
if [ -d "$dir" ]; then
bytes[now_rx_$interface]="$(cat "$dir"/statistics/rx_bytes)"
bytes[now_tx_$interface]="$(cat "$dir"/statistics/tx_bytes)"
bytes_down=$((((${bytes[now_rx_$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]}
fi
done
if [ "$down" -gt 1000 ] || [ "$up" -gt 1000 ]; then
echo "$(print_bytes $down)$(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
}
get_initial_throughput
get_throughput