i3 and sound control from keyboard on FreeBSD

bindsym XF86AudioRaiseVolume exec --no-startup-id mixer vol=+10% && $refresh_i3status

bindsym XF86AudioLowerVolume exec --no-startup-id mixer vol=-10% && $refresh_i3status

bindsym XF86AudioMute exec --no-startup-id "mixer vol.mute | grep on; [ $? -eq 0 ] && mixer vol.mute=off || mixer vol.mute=on && $refresh_i3status"

bindsym XF86AudioMicMute exec --no-startup-id "mixer mic.mute | grep on; [ $? -eq 0 ] && mixer mic.mute=off || mixer mic.mute=on && $refresh_i3status"