Multiple battieries in i3blocks

My T440 has both an internal and an external battery. I did not find an existing solution to my needs, so I came up with my own.

1. Script

The "don't ask questions' one-liner. Maybe it works for you too.

#!/bin/bash
acpi -b | gawk 'match($0, /([0-9]+)%/, a) { printf(" <span color=\"#50e682\">🔋</span> %i <span color=\"#50e682\">%</span> ", a[1])}' | rev | cut -c1- | rev

2. Example Output

The HTML to display all batteries (in this case two). Now it would be cool to use the appropriate emoji for each battery state, but that is probably hard to integrate into the pipe line.

$ chmod +x ./battery
$ ./battery
 <span color="#50e682">🔋</span> 99 <span color="#50e682">%</span>  <span color="#50e682">🔋</span> 98 <span color="#50e682">%</span>

3. Configuring i3blocks

Adding a small section to display the script output.

[battery]
command=~/.config/i3blocks/battery
interval=2
border=#50e682
border_top=1
border_right=0
border_bottom=0
border_left=0