test.sh

#!/bin/bash

used=$(free -m | grep Mem | awk '{print $3}')
avail=$(free -m | grep Mem | awk '{print $2}')
setenta=$((avail*70/100))
ochenta=$((avail*80/100))
noventa=$((avail*90/100))
porcentaje=$(free -b | grep Mem | awk '{print $3/$2 * 100}' | awk -F . '{print $1}')

displaymbs() {
    if
    [ "${used}" -ge "${noventa}" ]; then
        echo "<span foreground='red'></span> ${used}M / ${avail}M"
    elif [ "${used}" -ge "${ochenta}" ]; then
        echo "<span foreground='orange'></span> ${used}M / ${avail}M"
    elif [ "${used}" -ge "${setenta}" ]; then
        echo "<span foreground='yellow'></span> ${used}M / ${avail}M"
    else
        echo "<span foreground='gray'></span> ${used}M / ${avail}M"
    fi
}

displayper() {
    if [ "${porcentaje}" -ge "90" ]; then
        echo "<span foreground='red'></span> ${porcentaje}%"
    elif [ "${porcentaje}" -ge "80" ]; then
        echo "<span foreground='orange'></span> ${porcentaje}%"
    elif [ "${porcentaje}" -ge "70" ]; then
        echo "<span foreground='yellow'></span> ${porcentaje}%"
    else
        echo "<span foreground='gray'></span> ${porcentaje}%"
    fi
}

case $BLOCK_BUTTON in
    1)
        if [ $(cat /tmp/i3blocks-mem) == "1" ]; then
            displaymbs
            echo 0 > /tmp/i3blocks-mem
        else
            displayper
            echo 1 > /tmp/i3blocks-mem
        fi
        ;;
esac

displayper