#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