essentials/scripts/lemonbar/final_bar.sh

#!/usr/bin/env bash
# z3bra - (c) wtfpl 2014
# Fetch infos on your computer, and print them to stdout every second.
#   Also takes content from window manager to build bar

# ICONS
wifi_icon=''
cpu_icon=''
ram_icon=''
speaker_icon=''
plug_icon=''
thunderbolt_icon=''
clock_icon=''

clock() {
  date=$(date '+%Y-%m-%d %H:%M')
  echo "%{F#FFFFFFFF}$clock_icon $date%{F#FF6A9FB5}"
}

battery() {
    BATC=/sys/class/power_supply/BAT0/capacity
    BATS=/sys/class/power_supply/BAT0/status

    cap="$(sed -n p $BATC)"
    green_decimal=$((128 + (128 * $cap) / 101))
    red_decimal=$((128 + (128 * (100 - $cap)) / 101))
    red_hex=$(echo "obase=16; $red_decimal" | bc)
    green_hex=$(echo "obase=16; $green_decimal" | bc)

    test "`cat $BATS`" = "Charging" && echo -n "%{F#FFFFFFFF}$plug_icon " || echo -n "%{F#FFFFFF00}$thunderbolt_icon "

    echo "%{F#FF${red_hex}${green_hex}80}$cap%%{F#FF6A9FB5}"
}

volume() {
  volume=$(amixer -D pulse get Master | grep -P -o '\[[0-9]+%\]')
  echo "%{F#FFC2A366}$speaker_icon $volume%{F#FF6A9FB5}"
}

cpuload() {
    LINE=`ps -eo pcpu |grep -vE '^\s*(0.0|%CPU)' |sed -n '1h;$!H;$g;s/\n/ +/gp'`
    cpu=$(bc <<< $LINE)
    echo "%{F#FF94FF70}$cpu_icon $cpu%%{F#FF6A9FB5}"
}

memused() {
  mem=$(free -m | head -n 2 | tail -n 1 | awk '{printf("%2.1fG/%0.2gG\n" ,($3/1024),($2/1024))}')
  echo "%{F#FF80E6FF}$ram_icon $mem%{F#FF6A9FB5}"
}

wifi() {
  current_wifi=$(nmcli -t --fields NAME con show --active)
  echo "%{F#FFB8D4DC}$wifi_icon $current_wifi%{F#FF6A9FB5} |"
}

groups() {
    cur=`xprop -root _NET_CURRENT_DESKTOP | awk '{print $3}'`
    tot=`xprop -root _NET_NUMBER_OF_DESKTOPS | awk '{print $3}'`

    for w in `seq 0 $((cur - 1))`; do line="${line}="; done
    line="${line}|"
    for w in `seq $((cur + 2)) $tot`; do line="${line}="; done
    echo $line
}


alsamixer='xdotool key super+F10'
htop='xdotool key super+F9'
# This loop will fill a buffer with our infos, and output it to stdout.
function build_status  {
    buf="%{r}%{F#FF6A9FB5}"
    buf="${buf} $(wifi)"
    buf="${buf} $(cpuload) |"
    buf="${buf} $(memused) |"
    buf="${buf} $(volume) |"
    buf="${buf} $(battery) |"
    buf="${buf} $(clock)"

    echo $buf
}

while true; do

  read -t 0.25 new_wm_content
  if [ -n "$new_wm_content" ]; then
    wm_content="$new_wm_content"
  fi

  status_content="$(build_status)"
  combined_content="$wm_content$status_content"

  echo "$combined_content"

  sleep 0.1
done