10
6.10 Killing a Rogue Client 105
if [ -s $MAIL ]
then
xset led 3
else
xset -led 3
fi
done
This script can be executed in the background by a line in your shell profile:
mailled &
6.9 Killing a Rogue Client
The xkill utility enables you to kill an X client by clicking on it. Actually, it doesn??™t
kill the client process, but it does kill the connection between the X server and the
client. In most cases, that??™s enough to cause the client to terminate; in any case, it
gets it off the screen.
xkill is usually run without any arguments:
$ xkill
The mouse cursor will change to a skull-and-crossbones or a type of crosshair,
depending on the version of xkill installed. Click on the offending window to kill it;
middle-click to abort xkill.
KDE will invoke an internal version of xkill when you press Ctrl-Alt-
ESC, turning the cursor into a skull-and-crossbones. Pressing Ctrl-Alt-
ESC again will turn off xkill mode.
6.10 Examining Part of the Display in Detail
xmag is a simple utility that magnifies part of the display and displays the color code
of selected pixels. Start it without any arguments:
$ xmag
The cursor will change into an upper-left frame (??®). Click on the upper-left corner of
the area you wish to magnify.
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