vincentbernat.i3wm-configuration/bin/polybar

#!/bin/sh

export LAN=$(nmcli -t device | awk -F: '($2 == "ethernet") {print $1; exit}')
export WLAN=$(nmcli -t device | awk -F: '($2 == "wifi") {print $1; exit}')
export DPI=$(xrdb -query | sed -nE 's/^Xft\.dpi:\s*//p')
export HEIGHT=$((20 * DPI / 96))

NUMS=$(polybar --list-monitors | wc -l)
PRIMARY=$(polybar --list-monitors | awk -F: '($0 ~ /primary/) {print $1; exit}')
case $NUMS in
    1)
        MONITOR=$PRIMARY polybar --reload alone &
        ;;
    *)
        MONITOR=$PRIMARY polybar --reload primary &
        for MONITOR in $(polybar --list-monitors | awk -F: '($0 !~ /primary/) {print $1}'); do
            export MONITOR
            polybar --reload secondary &
        done
        ;;
esac
wait