#mute sound
"amixer set Master 0; amixer set Headphone 0; amixer set Front 0"
Shift + F3

#decrease volume by 5%
"amixer set Master 5-; amixer set Headphone 5-; amixer set Front 5-"
Shift + F4

#increase volume by 5%
"amixer set Master 5+; amixer set Headphone 5+; amixer set Front 5+"
Shift + F5

# switch touchpad on/off
"synaptics-switch"
Shift + F11

#eject CD/DVD-ROM
"eject -T"
Shift + F12