"amixer -q sset Master toggle"
    m:0x0 + c:121
"amixer -q -M sset Master 5%-"
    m:0x0 + c:122
"amixer -q -M sset Master 5%+"
    m:0x0 + c:123
"light -U 5"
    m:0x0 + c:232
"light -A 5"
    m:0x0 + c:233