xmonad.hs

import XMonad
import XMonad.Hooks.DynamicLog
import XMonad.Hooks.ManageDocks
import XMonad.Util.Run(spawnPipe)
import XMonad.Util.EZConfig(additionalKeys)
import System.IO

myManageHook = composeAll
    [ className =? "Gimp" --> doFloat
    , className =? "Xmag" --> doFloat
    ]

main = do
    xmproc <- spawnPipe "xmobar"
    xmonad $ defaultConfig
        { manageHook = manageDocks <+> myManageHook
                        <+> manageHook defaultConfig
        , layoutHook = avoidStruts  $  layoutHook defaultConfig
        , logHook = dynamicLogWithPP xmobarPP
                        { ppOutput = hPutStrLn xmproc
                        , ppTitle = xmobarColor "green" "" . shorten 50
                        }
        , terminal = "gnome-terminal"
        } `additionalKeys`

        -- hijack some gnome keyboard shortcuts
        [ ((controlMask .|. mod1Mask, xK_l), spawn "gnome-screensaver-command --lock")
        , ((controlMask .|. mod1Mask, xK_t), spawn "gnome-terminal")

        -- volume up/down/mute (you see 2 everywhere because that's my active sound card, yours may be 0)
        , ((0, 0x1008FF11), spawn "pactl set-sink-mute 2 0; pactl set-sink-volume 2 -- -3%")
        , ((0, 0x1008FF12), spawn "muted=$(pactl list sinks | grep 'Mute' | tail -1 | awk '{print $2}'); if [ $muted == yes ]; then pactl set-sink-mute 2 0; else pactl set-sink-mute 2 1; fi")
        , ((0, 0x1008FF13), spawn "pactl set-sink-mute 2 0; pactl set-sink-volume 2 -- +3%")

        -- print screen (immediate or delayed over a selectable region)
        , ((0, xK_Print), spawn "scrot")
        , ((mod1Mask, xK_Print), spawn "sleep 0.2; scrot -s")
        ]