ctrl + shift +up                  =>   doas light -A 10 ; notify-send "Light" "Light Up %$(light)"
Ctrl_left + shiFt + Down          =>   doas light -U 10 ; notify-send "Light" "Light Down %$(light)"
meTa_right + a                    =>   set file (ls ~/learn/book | wmenu); and test -n "<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>f</mi><mi>i</mi><mi>l</mi><mi>e</mi><mi>"</mi><mi>;</mi><mi>a</mi><mi>n</mi><mi>d</mi><mi>z</mi><mi>a</mi><mi>t</mi><mi>h</mi><mi>u</mi><mi>r</mi><mi>a</mi><mtext>&#x000A0;</mtext><mo>&#x0002F;</mo><mi>l</mi><mi>e</mi><mi>a</mi><mi>r</mi><mi>n</mi><mo>&#x0002F;</mo><mi>b</mi><mi>o</mi><mi>o</mi><mi>k</mi><mo>&#x0002F;</mo><mi>"</mi></mrow></math>file"
Ctrl_left + shift_right + right   =>   pactl set-sink-volume @DEFAULT_SINK@ +10% ; notify-send "Sound" "Volume Up %$(pamixer --get-volume)"
ctrl+ shift+left                  =>   pactl set-sink-volume @DEFAULT_SINK@ -10% ; notify-send "Sound" "Volume Down %$(pamixer --get-volume)"