dwm brightness conrol keys

dwm

sudo apt-get install xbacklight

: /etc/X11/xorg.conf

Section "Device"
        Identifier      "Card0"
        Driver          "intel"
        Option          "Backlight"     "/sys/class/backlight/intel_backlight"
EndSection

: config.h

#include <X11/XF86keysym.h>
...
static const char *brightup[]       = { "/usr/bin/xbacklight", "-inc", "10", NULL };
static const char *brightdown[]     = { "/usr/bin/xbacklight", "-dec", "10", NULL };
...
    { 0,                 XF86XK_MonBrightnessUp,    spawn,            {.v = brightup } },
    { 0,                 XF86XK_MonBrightnessDown,  spawn,            {.v = brightdown } },
...