Show the status of capslock or numlock.
Add the following bindings to i3 config file:
bindsym --release Caps_Lock exec pkill -SIGRTMIN+11 i3blocks
bindsym --release Num_Lock exec pkill -SIGRTMIN+11 i3blocks
Use the following in your i3blocks config file:
[keyindicator]
command=$SCRIPT_DIR/keyindicator
#Allowed keys are CAPS and NUM
KEY=CAPS
markup=pango
interval=once
signal=11
#TEXT_ON=CapsLockOn
#TEXT_OFF=CapsLockOff
#COLOR_ON=#00FF00
#COLOR_OFF=#222222
#BG_COLOR_ON=
#BG_COLOR_OFF=
[keyindicator]
command=$SCRIPT_DIR/keyindicator
KEY=NUM
markup=pango
interval=once
signal=11
#TEXT_ON=NumLockOn
#TEXT_OFF=NumLockOff
#COLOR_ON=#00FF00
HIDE_WHEN_OFF=1
Usage: keyindicator [-c <color on>] [-C <color off>] [-b <bg color on>] [-B <bg color off>] [--hide]
-c <color on>: hex color to use when indicator is on
-C <color off>: hex color to use when indicator is off
-b <background color on>: hex color to use when indicator is on
-B <background color off>: hex color to use when indicator is off
--hide: don't output anything when indicator is off