/usr/bin/ukui-wm is in ukui-session-manager 1.1.2-0ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | #!/bin/sh
# The user can specify his prefered WM by setting the WINDOW_MANAGER
# environment variable.
#
# If this is not set, we search a list of known windowmanagers and use
# the first one that is found in the users's PATH
#
# NOTE: DON'T USE THIS.  Please have your window manager install
# a desktop file and change the ukuiconf key
# /desktop/ukui/session/required_components/windowmanager
# sm-client-id value
SMID=
# default-wm value
DEFWM=
#read in the arguments
GET=
for n in "$@" ; do
  case "$GET" in
    smid)
      SMID=$n
      GET=
      ;;
    defwm)
      DEFWM=$n
      GET=
      ;;
    *)
      case "$n" in
        --sm-client-id)
          GET=smid
          ;;
        --default-wm)
          GET=defwm
          ;;
      esac
      ;;
  esac
done
# WINDOW_MANAGER overrides all
if [ -z "$WINDOW_MANAGER" ] ; then
    WINDOW_MANAGER=`gsettings get org.ukui.session.required-components windowmanager 2> /dev/null`
fi
# Migrate compiz to compiz-manager if possible and needed
if [ "x$WINDOW_MANAGER" = "xcompiz" -o "x$DEFWM" = "xcompiz" ]; then
  which compiz-manager > /dev/null 2>&1
  if [ $? -eq 0 ]; then
    if [ "x$WINDOW_MANAGER" = "xcompiz" ]; then
      WINDOW_MANAGER="compiz-manager"
    fi
    if [ "x$DEFWM" = "xcompiz" ]; then
      DEFWM="compiz-manager"
    fi
  fi
fi
# Avoid looping if the session configuration tells us to use ukui-wm or if
# the user forces ukui-wm via WINDOW_MANAGER
if [ "x$WINDOW_MANAGER" = "xukui-wm" ]; then
  WINDOW_MANAGER=""
fi
if [ -z "$WINDOW_MANAGER" ] ; then
  # Create a list of window manager we can handle, trying to only use the
  # compositing ones when it makes sense
  xdpyinfo 2> /dev/null | grep -q "^ *Composite$" 2> /dev/null
  IS_X_COMPOSITED=$?
  KNOWN_WM="sawfish sawmill enlightenment icewm wmaker fvwm2 qvwm fvwm twm kwm"
  if [ $IS_X_COMPOSITED -eq 0 ] ; then
    KNOWN_WM="mutter compiz-manager compiz beryl $KNOWN_WM"
  fi
  # ukwm is the default wm in UKUI
  KNOWN_WM="ukwm $KNOWN_WM"
  OLDIFS=$IFS
  if [ -z "$DEFWM" -o "x$DEFWM" = "xukui-wm" ]; then
    for wm in $KNOWN_WM ; do
      IFS=":"
      for dir in $PATH ; do
        if [ -x "$dir/$wm" ] ; then
          WINDOW_MANAGER="$dir/$wm"
          break 2
        fi
      done
      IFS=$OLDIFS
    done
  else
    WINDOW_MANAGER=$DEFWM
  fi
  IFS=$OLDIFS
fi
# If no window manager can be found, we default to xterm
if [ -z "$WINDOW_MANAGER" ] ; then
  echo "WARNING: No window manager can be found."
  WINDOW_MANAGER=xterm
fi
# Now create options OPT1, OPT2 and OPT3 based on the windowmanager used
OPT1=
OPT2=
OPT3=
OPT4=
if [ ! -z "$SMID" ] ; then
  case `basename $WINDOW_MANAGER` in
    sawfish|sawmill|ukwm|mutter)
      OPT1=--sm-client-id=$SMID
      ;;
    openbox|enlightenment|e16)
      OPT1=--sm-client-id
      OPT2=$SMID
      ;;
    twm)
      OPT1=-clientId
      OPT2=$SMID
      ;;
    lwm)
      OPT1=-s
      OPT2=$SMID
      ;;
    fvwm)
      OPT1=-i
      OPT2=$SMID
      ;;
    compiz|compiz-manager)
      OPT1=--sm-client-id
      OPT2=$SMID
      ;;
    beryl)
      OPT1=--sm-client-id
      OPT2=$SMID
      ;;
    #FIXME: add all other windowmanagers here with their proper options
  esac
fi
case `basename $WINDOW_MANAGER` in
  compiz)
    #commented lines cause high cpu usage
    #export LIBGL_ALWAYS_INDIRECT=1
    gtk-window-decorator &
    #OPT3=glib
    #OPT4=ukuiconf
    ;;
  beryl)
    emerald &
    ;;
esac
exec $WINDOW_MANAGER $OPT1 $OPT2 $OPT3 $OPT4
echo "ERROR: No window manager could run!"
 |