diff --git a/.config/i3/scripts/bandwidth2 b/.config/i3/scripts/bandwidth2 new file mode 100644 index 0000000..b03250e --- /dev/null +++ b/.config/i3/scripts/bandwidth2 @@ -0,0 +1,104 @@ +#!/usr/bin/env bash +# +# Copyright (C) 2015 James Murphy +# Licensed under the terms of the GNU GPL v2 only. +# +# i3blocks blocklet script to monitor bandwidth usage + +iface="${BLOCK_INSTANCE}" +iface="${IFACE:-$iface}" +dt="${DT:-3}" +unit="${UNIT:-MB}" +LABEL="${LABEL:-}" # down arrow up arrow +printf_command="${PRINTF_COMMAND:-"printf \"${LABEL}%1.0f/%1.0f %s/s\\n\", rx, wx, unit;"}" + +function default_interface { + ip route | awk '/^default via/ {print $5; exit}' +} + +function check_proc_net_dev { + if [ ! -f "/proc/net/dev" ]; then + echo "/proc/net/dev not found" + exit 1 + fi +} + +function list_interfaces { + check_proc_net_dev + echo "Interfaces in /proc/net/dev:" + grep -o "^[^:]\\+:" /proc/net/dev | tr -d " :" +} + +while getopts i:t:u:p:lh opt; do + case "$opt" in + i) iface="$OPTARG" ;; + t) dt="$OPTARG" ;; + u) unit="$OPTARG" ;; + p) printf_command="$OPTARG" ;; + l) list_interfaces && exit 0 ;; + h) printf \ +"Usage: bandwidth3 [-i interface] [-t time] [-u unit] [-p printf_command] [-l] [-h] +Options: +-i\tNetwork interface to measure. Default determined using \`ip route\`. +-t\tTime interval in seconds between measurements. Default: 3 +-u\tUnits to measure bytes in. Default: Mb +\tAllowed units: Kb, KB, Mb, MB, Gb, GB, Tb, TB +\tUnits may have optional it/its/yte/ytes on the end, e.g. Mbits, KByte +-p\tAwk command to be called after a measurement is made. +\tDefault: printf \"%%-5.1f/%%5.1f %%s/s\\\\n\", rx, wx, unit; +\tExposed variables: rx, wx, tx, unit, iface +-l\tList available interfaces in /proc/net/dev +-h\tShow this help text +" && exit 0;; + esac +done + +check_proc_net_dev + +iface="${iface:-$(default_interface)}" +while [ -z "$iface" ]; do + echo No default interface + sleep "$dt" + iface=$(default_interface) +done + +case "$unit" in + Kb|Kbit|Kbits) bytes_per_unit=$((1024 / 8));; + KB|KByte|KBytes) bytes_per_unit=$((1024));; + Mb|Mbit|Mbits) bytes_per_unit=$((1024 * 1024 / 8));; + MB|MByte|MBytes) bytes_per_unit=$((1024 * 1024));; + Gb|Gbit|Gbits) bytes_per_unit=$((1024 * 1024 * 1024 / 8));; + GB|GByte|GBytes) bytes_per_unit=$((1024 * 1024 * 1024));; + Tb|Tbit|Tbits) bytes_per_unit=$((1024 * 1024 * 1024 * 1024 / 8));; + TB|TByte|TBytes) bytes_per_unit=$((1024 * 1024 * 1024 * 1024));; + *) echo Bad unit "$unit" && exit 1;; +esac + +scalar=$((bytes_per_unit * dt)) +init_line=$(cat /proc/net/dev | grep "^[ ]*$iface:") +if [ -z "$init_line" ]; then + echo Interface not found in /proc/net/dev: "$iface" + exit 1 +fi + +init_received=$(awk '{print $2}' <<< $init_line) +init_sent=$(awk '{print $10}' <<< $init_line) + +(while true; do cat /proc/net/dev; sleep "$dt"; done) |\ + stdbuf -oL grep "^[ ]*$iface:" |\ + awk -v scalar="$scalar" -v unit="$unit" -v iface="$iface" ' +BEGIN{old_received='"$init_received"';old_sent='"$init_sent"'} +{ + received=$2 + sent=$10 + rx=(received-old_received)/scalar; + wx=(sent-old_sent)/scalar; + tx=rx+wr; + old_received=received; + old_sent=sent; + if(rx >= 0 && wx >= 0){ + '"$printf_command"'; + fflush(stdout); + } +} +'