NAME
xlock - Locks the local X display until a password is
entered.
SYNOPSIS
xlock [ -help ] [ -version ] [ -resources ] [ -display
displayname ] [ -visual visualname ] [ -name resourcename ]
[ -mode modename ] [ -delay usecs ] [ -batchcount num ] [
-count num ] [ -cycles num ] [ -ncolors num ] [ -size num ]
[ -saturation value ] [ -erasemode modename ] [ -erasedelay
usecs ] [ -/+allowaccess ] [ -vtlock modename ] [ -/+nolock
] [ -/+inwindow ] [ -/+inroot ] [ -/+remote ] [ -/+mono ] [
-/+allowroot ] [ -/+debug ] [ -/+description ] [ -/+echokeys
] [ -/+enablesaver ] [ -/+resetsaver ] [ -/+grabmouse ] [ -
/+grabserver ] [ -/+install ] [ -/+mousemotion ] [ -/+sound
] [ -/+timeelapsed ] [ -/+usefirst ] [ -/+verbose ] [ -nice
level ] [ -lockdelay seconds ] [ -timeout seconds ] [ -font
fontname ] [ -planfont fontname ] [ -bg color ] [ -fg color
] [ -background color ] [ -foreground color ] [ -username
string ] [ -password string ] [ -info string ] [ -validate
string ] [ -invalid string ] [ -geometry geom ] [
-icongeometry geom ] [ -glgeometry geom ] [ -/+fullrandom ]
[ -/+wireframe ] [ -/+use3d ] [ -delta3d value ] [ -none3d
color ] [ -right3d color ] [ -left3d color ] [ -both3d color
] [ -program programname ] [ -messagesfile formatted-
filename ] [ -messagefile filename ] [ -message string ] [
-messagefont fontname ] [ -bitmap filename ] [ -neighbors
num ] [ -/+mouse ] [ -cpasswd crypted-password ] [ -forceLo-
gout minutes ] [ -logoutButtonLabel textstring ] [ -logout-
ButtonHelp textstring ] [ -logoutFailedString textstring ] [
-/+dtsaver ] [ -modulepath path ] [ -locksound string ] [
-infosound string ] [ -validsound string ] [ -invalidsound
string ] [ -startCmd string ] [ -endCmd string ] [
-logoutCmd string ]
DESCRIPTION
xlock locks the X server till the user enters their password
at the keyboard. While xlock is running, all new server
connections are refused. The screen saver is disabled. The
mouse cursor is turned off. The screen is blanked and a
changing pattern is put on the screen. If a key or a mouse
button is pressed then the user is prompted for the password
of the user who started xlock.
If the correct password is typed, then the screen is
unlocked and the X server is restored. When typing the
password Control-U and Control-H are active as kill and
erase respectively. To return to the locked screen, click
in the small icon version of the changing pattern.
In the lower part of the password screen a text is
displayed. This message is taken from the first file of the
following that exists: $HOME/.xlocktext, $HOME/.plan, or
$HOME/.signature.
On systems which support new BSD style authentication, the
password may be prefixed by an authentication style followed
by a colon (i.e. "style:password"). See the login.conf(5)
for more information on authentication styles.
NOTE ON ETIQUETTE
Xlock should not be used on public terminals when there is a
high demand for them.
If you find a public terminal that has been locked by
another user and there are no other terminals available, and
the terminal appears to have been left idle for a while
(normally more than 15 minutes), it is fair to try to reset
the session in some manner.
OPTIONS
-help
Print options and a brief description to standard out-
put.
-version
Print version number (if >= 4.00) to standard output.
-resources
Print default resource file to standard output.
-display displayname
The display option sets the X11 display to lock. xlock
locks all available screens on a given server, and res-
tricts you to locking only a local server such as
unix:0, localhost:0, or :0 unless you set the -remote
option.
-visual visualname
visualname which is one of "StaticGray", "GrayScale",
"StaticColor", "PseudoColor", "TrueColor",
"DirectColor", or "default". default used to set the
screen's default visual (the visual of the root win-
dow).
-name resourcename
resourcename is used instead of XLock when looking for
resources to configure xlock.
-mode modename
As of this writing there are over 90 display modes sup-
ported (plus one more for random selection of one of
these).
ant Shows Langton's and Turk's generalized ants.
atlantis
Shows moving sharks/whales/dolphin. May not be
available depending on how it was configured.
ball Shows bouncing balls.
bat Shows bouncing flying bats.
blot Shows Rorschach's ink blot test.
bouboule
Shows Mimi's bouboule of moving stars.
bounce Shows bouncing footballs.
braid Shows random braids and knots.
bubble Shows popping bubbles.
bubble3d
Shows Richard Jones's GL bubbles. May not be avail-
able depending on how it was configured.
bug Shows Palmiter's bug evolution and a garden of Eden.
cartoon Shows bouncing cartoons. May not be available
depending on how it was configured.
clock Shows Packard's oclock.
coral Shows a coral reef.
crystal Shows polygons in 2D plane groups.
daisy Shows a meadow of daisies.
dclock Shows a floating digital clock.
deco Shows art as ugly as sin.
demon Shows Griffeath's cellular automata.
dilemma Shows Lloyd's Prisoner's Dilemma simulation.
discrete
Shows various discrete maps.
drift Shows cosmic drifting flame fractals.
cage Shows the Impossible Cage, an Escher-like GL scene.
May not be available depending on how it was config-
ured.
eyes Shows eyes following a bouncing grelb.
fadeplot
Shows a fading plot of sine squared.
flag Shows a waving flag of your operating system.
flame Shows cosmic flame fractals.
flow Shows dynamic strange attractors.
forest Shows binary trees of a fractal forest.
galaxy Shows crashing spiral galaxies.
gears Shows GL's gears. May not be available depending on
how it was configured.
goop Shows goop from a lava lamp.
grav Shows orbiting planets.
helix Shows string art.
hop Shows real plane iterated fractals.
hyper Shows spinning n-dimensional hypercubes.
ico Shows a bouncing polyhedron.
ifs Shows a modified iterated function system.
image Shows randomly appearing logos.
julia Shows the Julia set.
kaleid Shows Brewster's Kaleidoscope.
kummpa Shows kumppa.
laser Shows spinning lasers.
life Shows Conway's game of life.
life1d Shows Wolfram's game of 1D life.
life3d Shows Bays' game of 3D life.
lightning
Shows Keith's fractal lightning bolts.
lisa Shows animated lissajous loops.
lissie Shows lissajous worms.
loop Shows Langton's self-producing loops.
mandelbrot
Shows mandelbrot sets.
marquee Shows text.
maze Shows a random maze and a depth first search solu-
tion.
moebius Shows the Moebius Strip II, an Escher-like GL scene
with ants. May not be available depending on how it
was configured.
morph3d Shows GL morphing polyhedra. May not be available
depending on how it was configured.
mountain
Shows Papo's mountain range.
munch Shows munching squares.
nose Shows a man with a big nose runs around spewing out
text.
pacman Shows Pacman(tm).
pipes Shows a self-building pipe system. May not be
available depending on how it was configured.
penrose Shows Penrose's quasiperiodic tilings.
petal Shows various GCD Flowers.
puzzle Shows a puzzle being scrambled and then solved.
pyro Shows fireworks.
qix Shows spinning lines a la Qix(tm).
roll Shows a rolling ball.
rotor Shows Tom's Roto-Rooter.
rubik Shows an auto-solving Rubik's Cube. May not be
available depending on how it was configured.
shape Shows stippled rectangles, ellipses, and triangles.
sierpinski
Shows a Sierpinski's triangle.
slip Shows slipping blits.
sphere Shows a bunch of shaded spheres.
spiral Shows a helical locus of points.
spline Shows colorful moving splines.
sproingies
Shows Sproingies! Nontoxic. Safe for pets and
small children. May not be available depending on
how it was configured.
stairs Shows Infinite Stairs, an Escher-like GL scene. May
not be available depending on how it was configured.
star Shows a star field with a twist.
starfish
Shows starfish.
strange Shows strange attractors.
superquadrics
Shows 3D mathematical shapes. May not be available
depending on how it was configured.
swarm Shows a swarm of bees following a wasp.
swirl Shows animated swirling patterns.
tetris Shows tetris.
thornbird
Shows an animated Bird in a Thorn Bush fractal map.
triangle
Shows a triangular mountain range.
tube Shows an animated tube.
turtle Shows turtle fractals.
vines Shows fractal-like vines.
voters Shows Dewdney's Voters.
wator Shows Dewdney's Water-Torus planet of fish and
sharks.
wire Shows a random circuit with 2 electrons.
world Shows spinning Earths.
worm Shows wiggly worms.
xjack Shows Jack having one of those days.
blank Shows nothing but a black screen. Does not show up
in random mode.
bomb Shows a bomb and will autologout after a time. Does
not show up in random mode and may be available
depending on how it was configured.
random Shows a random mode from above except blank (and
bomb).
-delay usecs
The delay option sets the speed at which a mode will
operate. It simply sets the number of microseconds to
delay between batches of animations. In blank mode, it
is important to set this to some small number of
seconds, because the keyboard and mouse are only
checked after each delay, so you cannot set the delay
too high, but a delay of zero would needlessly consume
cpu checking for mouse and keyboard input in a tight
loop, since blank mode has no work to do.
-count num
The batchcount option sets number of things to do per
batch to num .
In ant mode this refers the number of ants.
In atlantis mode it is the number of sharks.
In ball mode it is the number of balls.
In bat mode it is the number of bats, could be less
because of conflicts.
In blot mode this refers to the number of pixels ren-
dered in the same color.
In bouboule mode it is the number of stars.
In bounce mode it is the number of balls, could be less
because of conflicts.
In braid mode it is the upper bound number of strands.
In bubble mode it is the number of bubbles.
In bubble3d mode it is the number of bubbles.
In bug mode it is the number of bugs, could be less
because of conflicts.
In cage mode it is means nothing.
In cartoon mode it means nothing.
In clock mode it is the percentage of the screen, but
less than 100%.
In coral mode it is the number of seeds.
In crystal mode it is the number of polygons.
In daisy mode it is the number flowers that make a
meadow.
In dclock mode it means nothing.
In deco mode it is the depth.
In demon mode this refers the number of colors.
In dilemma mode this refers the number of initial
defectors.
In discrete mode it is the number of points.
In drift mode it is the number of levels to recurse
(larger = more complex).
In eyes mode it is the number of eyes.
In fadeplot mode it is the number of steps.
In flag mode it means nothing.
In flame mode it is the number of levels to recurse
(larger = more complex).
In flow mode it is the number of bees.
In forest mode it is the number trees that make a
forest.
In galaxy mode it means the number of galaxies.
In gears mode it is the number of degrees to rotate the
set of gears by.
In goop mode it is the number of blobs per plane.
In grav mode it is the number of planets.
In helix mode it means nothing.
In hop mode this refers to the number of pixels ren-
dered in the same color.
In hyper mode it the number of dimensions.
In ico mode it is the ith platonic solid.
In ifs mode it means nothing.
In image mode it means it is the number of logos on
screen at once.
In julia mode it is the depth of recursion.
In kaleid mode it is the number of pens.
In kumppa mode it means nothing.
In laser mode it is the number lasers.
In life mode it is the number of generations before a
glider is introduced.
In life1d mode it means nothing.
In life3d mode it is the number of generations before a
glider is introduced.
In lisa mode it is the number of loops.
In lissie mode it is the number of worms.
In loop mode it means nothing.
In mandelbrot mode it is the order.
In marquee mode it means nothing.
In maze mode it means nothing.
In moebius mode it is means nothing.
In morph3d mode it is the ith platonic solid.
In mountain mode it is the number of mountains.
In munch mode it means nothing.
In nose mode it means nothing.
In qix mode it is the number of points.
In pacman mode it means the number of ghosts.
In penrose mode it means nothing.
In petal mode it the greatest random number of petals.
In pipes mode it shows different joints, 0 random, 1
spherical, 2 bolted elbow, 3 elbow, and 4 alternating.
In puzzle mode it the number of moves.
In pyro mode it is the maximum number flying rockets at
one time.
In roll mode it is the number of points.
In rotor mode it is the number of rotor thingys which
whirr...
In rubik mode it is the number of moves.
In shape mode it means nothing.
In sierpinski mode it is the number of points.
In slip mode it means nothing.
In sphere mode it means nothing.
In spiral mode it is the number of spirals.
In spline mode it is the number of points "splined".
In sproingies mode it is the number of sproingies.
In stairs mode it is means nothing.
In star mode it is the number of stars on the screen at
once.
In starfish mode it means nothing.
In strange mode it means nothing.
In superquadrics mode its the number of horizontal and
vertical lines in the superquadric.
In swirl mode it means the number of "knots".
In swarm mode it is the number of bees.
In thornbird mode it is the number of points.
In triangular mode it is the number of mountains.
In tube mode it is a rectangle (= 1), an ellipse (= 2),
or a polygon if greater.
In turtle mode it means nothing.
In vines mode it is draw a complete vine (= 0) or a
portion (= 1).
In voters mode it means the number of parties, 2 or 3.
In wator mode it means the breed time for the fish.
In wire mode it means the length of the circuit.
In world mode it is the number of worlds.
In worm mode it is the number of worms.
In blank mode it means nothing.
In bomb mode it means the number of minutes to autolo-
gout.
A negative count allows for randomness. The range from
the minimum allowed nonnegative count for a particular
mode to the ABS( count ) (or maximum allowed count ,
whichever is less).
-batchcount num
The batchcount option is depreciated but should still
work as count.
-cycles num
The cycles option sets the number of cycles until time
out for ant, blot, braid, bug, clock, crystal, daisy,
deco, demon, dilemma, discrete, eyes, flag, flow,
forest, galaxy, helix, hop, hyper, ico, laser, life,
life1d, life3d, lisa, lissie, loop, mandelbrot, moun-
tain, petal, sierpinski, shape, spline +erase, thorn-
bird, triangle, tube, voters, wator, and wire. For
worm it is the length of the lines, for atlantis it is
the shark speed, for fadeplot, julia and spiral it is
the length of the trail of dots, munch it is the
minimum size of the squares, for kaleid it is the % of
black, for qix it is the number of lines, for spline
-erase it means the number of splines * 64 (for compa-
tibility with +erase), for gears it is the number of
degrees to increment the spin of each gear by, for
pipes it is the number of systems to draw before clear-
ing the screen, for rubik it is the number of steps to
complete a 90 move, for superquadrics it is the number
of frames it takes to morph from one shape to another.
For others it means nothing.
-size num
The size option sets the size maximum size of a star in
bouboule, pyro and star, size of ball in ball and
bounce, size of bat in bat, maximum size of bubble in
bubble, size of clock in clock, minimum size of rectan-
gles in deco, size of the polygon in crystal, size of
polyhedron in ico, size of lissie in lissie, size of
dots of flag, for kaleid it is the symmetry, width of
maze hallway, size of side of penrose tile, radius of
loop in lisa, radius of ball in roll, number of corners
in sierpinski, size of tube in tube, width of worm in
worm, line width in rotor, size of cells in ant, bug,
dilemma, life, life1d, pacman, tetris, voters, wator,
and wire. In pipes it is the maximum length of a sys-
tem. In atlantis it is the shark size. In sproingies
it is the size of the screen. A negative number allows
for randomness, similar to count.
-ncolors num
The ncolors option sets the maximum number of colors to
be used.
-saturation value
The saturation option sets saturation of the color ramp
used to value . 0 is grayscale and 1 is very rich
color. 0.4 is a nice pastel.
-erasemode modename
As of this writing there are over 9 erase modes sup-
ported (if its not chosen its assumed random). The
erase modes are random_lines, random_squares, venetian,
triple_wipe, quad_wipe, circle_wipe, three_circle_wipe,
squaretate, no_fade.
-erasedelay usecs
The erasedelay option sets the number of microseconds
for steps of the erasemode (a setting of 0 and the
erasemode is bypassed).
+/-nolock
The nolock option causes xlock to only draw the pat-
terns and not lock the display. A key press or a mouse
click will terminate the screen saver.
-/+inwindow
Runs xlock in a window, so that you can iconify, move,
or resize it and still use your screen for other stuff.
When running in a window, xlock no longer locks your
screen, it just looks good.
-/+inroot
Runs xlock in your root window. Like the inwindow
option it no longer locks the screen, it just looks
good.
-/+remote
The remote option tells xlock to not stop you from
locking remote X11 servers. This option should be used
with care and is intended mainly to lock X11 terminals
which cannot run xlock locally. If you lock someone
else's workstation, they will have to know your pass-
word to unlock it. Using +remote overrides any
resource derived values for remote and prevents xlock
from being used to lock other X11 servers. (Use `+'
instead of `-' to override resources for other options
that can take the `+' modifier similarly.)
-/+mono
The mono option causes xlock to display monochrome,
(black and white) pixels rather than the default
colored ones on color displays.
-/+allowaccess
This option is required for servers which do not allow
clients to modify the host access control list. It is
also useful if you need to run x clients on a server
which is locked for some reason... When allowaccess is
true, the X11 server is left open for clients to attach
and thus lowers the inherent security of this lock
screen. A side effect of using this option is that if
xlock is killed -KILL, the access control list is not
lost.
-vtlock modename
This option is used on a XFree86 system to manage VT
switching in [off|noswitch|switch|restore] mode.
off means no VT switch locking.
switch means VT switch locking + switching to xlock VT
when activated.
restore means VT switch locking + switching to xlock VT
when activated + switching back to previous VT
when desactivated.
noswitch means VT switch locking only when xlock VT is
active.
-/+allowroot
The allowroot option allows the root password to unlock
the server as well as the user who started xlock. May
not be able to turn this on and off depending on your
system and how xlock was configured.
-/+debug
Allows xlock to be debugged by doing all but locking
the screen.
-/+description
The description option causes xlock shows a mode
description above password window. The default is to
show this description.
-/+echokeys
The echokeys option causes xlock to echo '?' characters
for each key typed into the password prompt. Some con-
sider this a security risk, so the default is to not
echo anything.
-/+enablesaver
By default xlock will disable the normal X server's
screen saver since it is in effect a replacement for
it. Since it is possible to set delay parameters long
enough to cause phosphor burn on some displays, this
option will turn back on the default screen saver which
is very careful to keep most of the screen black.
-/+resetsaver
By default xlock will call XResetScreenSaver. This may
be undesirable with DPMS monitors.
-/+grabmouse
The grabmouse option causes xlock to grab the mouse and
keyboard, this is the default. xlock can not lock the
screen without this.
-/+grabserver
The grabserver option causes xlock to grab the server.
This is not usually needed but some unsecure X servers
can be defeated without this.
-/+install
Allows xlock to install its own colormap if xlock runs
out of colors. May not work on with some window
managers (fvwm) and does not work with the -inroot
option.
-/+mousemotion
Allows you to turn on and off the sensitivity to the
mouse to bring up the password window.
-/+sound
Allows you to turn on and off sound if installed with
the capability.
-/+timeelapsed
Allows you to find out how long a machine is locked so
you can complain to an administrator that someone is
hogging a machine.
-/+usefirst
The usefirst option causes xlock to use the keystroke
which got you to the password screen as the first char-
acter in the password. The default is to ignore the
first key pressed.
-/+verbose
Verbose mode, tells what options it is going to use.
-nice nicelevel
The nice option sets system nicelevel of the xlock pro-
cess to nicelevel .
-lockdelay seconds
The lockdelay option sets the number of seconds before
the screen needs a password to be unlocked. Good for
use with an autolocking mechanism like xautolock(1).
-timeout seconds
The timeout option sets the number of seconds before
the password screen will time out.
-font fontname
The font option sets the font to be used on the prompt
screen.
-planfont fontname
option sets the font to be used for the text that is
displayed in the lower part of the password screen.
-fg color
The fg option sets the color of the text on the pass-
word screen to color .
-bg color
The bg option sets the color of the background on the
password screen to color .
-foreground color
The foreground option sets the color of the text on the
password screen to color .
-background color
The background option sets the color of the background
on the password screen to color .
-username string
Text string is shown in front of user name, defaults to
"Name: ".
-password string
Text string is the password prompt string, defaults to
"Password: ".
-info string
Text string is an informational message to tell the
user what to do, defaults to "Enter password to unlock;
select icon to lock.".
-validate string
Text string is a message shown while validating the
password, defaults to "Validating login..."
-invalid string
Text string is a message shown when password is
invalid, defaults to "Invalid login."
-geometry geom
The geometry option sets geom the size and offset of
the lock window (normally the entire screen). The
entire screen format is still used for entering the
password. The purpose is to see the screen even though
it is locked. This should be used with caution since
many of the modes will fail if the windows are far from
square or are too small (size must be greater than
0x0). This should also be used with -enablesaver to
protect screen from phosphor burn.
-icongeometry geom
The icongeometry option sets geom the size of the
iconic screen (normally 64x64) seen when entering the
password. This should be used with caution since many
of the modes will fail if the windows are far from
square or are too small (size must be greater than
0x0). The greatest size is 256x256. There should be
some limit so users could see who has locked the
screen. Position information of icon is ignored.
-glgeometry geom
The glgeometry option sets geom the size of the screen
for gl modes. Not normally available or needed.
-/+fullrandom
Turn on/off randomness options within modes. Not
implemented on all mode options.
-/+wireframe
Turn on/off wireframe, available on atlantis, daisy,
gears, life3d, mountain, sproingies, superquadrics, and
triangle.
-/+use3d
Turn on/off 3d view, available on bouboule, pyro, star,
and worm.
-delta3d value
Space between the center of your 2 eyes for 3d mode.
-none3d color
Color used for empty size in 3d mode.
-right3d color
Color used for right eye in 3d mode.
-left3d color
Color used for left eye in 3d mode.
-both3d color
Color used for overlapping images for left and right
eye in 3d mode.
-program programname
The program option sets the program to be used as the
fortune generator. Currently used only for marquee and
nose modes.
-messagesfile formatted-filename
The messagesfile option sets the file to be used as the
fortune generator. The first entry is the number of
fortunes, the next line contains the first fortune.
Fortunes begin with a "%%" on a line by itself.
Currently used only for marquee and nose modes. If one
exists, it takes precedence over the fortune program.
-messagefile filename
The messagefile option sets the file whose contents are
displayed. Currently used only for marquee and nose
modes. If one exists, it takes precedence over the
fortune program and messagesfile.
-message textstring
The message option sets the text to be displayed in a
mode. Currently used only for flag, marquee and nose
modes. If one exists, it takes precedence over the
fortune program, messagesfile and message.
-messagefont fontname
The messagefont option sets the font to be used in the
mode. Currently used only for flag, marquee, and nose
modes.
-bitmap filename
The bitmap option sets the xbm, xpm, or ras file to be
displayed with flag, image, life, life1d, maze, or puz-
zle mode. For eyes and pacman only a xbm file is
accepted. Certain modes reject the bitmap if too big.
-neighbors num
The neighbors option sets the number of neighbors of a
cell to 3, 4, 6, 9 (may not have real mathematical
meaning), or 12 for several automata modes. Setting it
to 0 typically randomizes this, except in life where it
is set to 8.
-/+mouse
Turn on and off mouse interaction in eyes, julia, and
swarm.
MORE OPTIONS (these may not be available)
-cpasswd crypted-password
The cpasswd option sets the key to be this text string
to unlock xlock instead of password file.
-forceLogout minutes
The forceLogout option sets minutes to auto-logout.
-logoutButtonLabel string
Text string is a message shown inside logout button
when logout button is displayed. Defaults to "Logout".
-logoutButtonHelp string
Text string is a message shown outside logout button
when logout button is displayed. Defaults to "Click
the \"Logout\" button to log out current\n user and
make workstation available."
-logoutFailedString string
Text string is a message shown when a logout is
attempted and fails. Defaults to "Logout attempt
FAILED.\n Current user could not be automatically
logged out."
-/+dtsaver
Turn on/off CDE Saver Mode. This option is only avail-
able if CDE support was compiled in.
-modulepath path
The modulepath option sets the directories that xlock
searches for mode modules to load. It is a colon
separated list of directories to search. If "%S" is
included in the path, it is replaced by the default
modulepath. To add a private module directory to the
default path, use something like '%S:~/mymoduledir' as
the path. This option is only available if module sup-
port was compiled in.
-locksound string
Text string references sound to use at lock time.
Default sound, male voice: "Thank you, for your
cooperation."
-infosound string
Text string references sound to use for information.
Default sound, male voice: "Identify please."
-validsound string
Text string references sound to when a password is
valid. Default sound, female voice: "Complete."
-invalidsound string
Text string references sound to when a password is
invalid. Default sound, female voice: "I am not pro-
grammed to give you that information."
-startCmd string
Text string command to execute when the screen is
locked. Commonly used instructions include: "zaway".
This command, if still running when the screensaver
exist, will be killed.
-endCmd string
Text string command to execute when the screen is
unlocked.
-logoutCmd string
Text string command to execute when the program logs
the user out (either via the autologout or by pressing
the logout button).
-mailCmd string
Text string command to execute when the program to
check mail.
-mailIcon string
Text string of file for the "mail arrived" bitmap.
-nomailIcon string
Text string of file for the "no mail" bitmap.
-dpmsstandby seconds
Allows one to set DPMS Standby for monitor (0 is
defined as infinite). (Horizontal sync on, Vertical
sync off, RGB guns off, power supply on, tube filaments
energized, (screen saver mode). Typical 17 inch
screen... 110 out of 120 watts with a 3 sec recovery
time.) This option is only available if DPMS support
was compiled in.
-dpmssuspend seconds
Allows one to set DPMS Suspend for monitor (0 is
defined as infinite). (Horizontal sync off, Vertical
sync on, RGB guns off, power supply off, tube filaments
energized. Typical 17 inch screen ... 15 out of 120
watts with a 3 sec recovery time.) This option is only
available if DPMS support was compiled in.
-dpmsoff seconds
Allows one to set DPMS Power Off for monitor (0 is
defined as infinite). (Horizontal sync off, Vertical
sync off, Small auxiliary circuit stays on to monitor
the HS/VS signals to enable power on when data needs to
be displayed on the screen. Typical 17 inch screen ...
5 out of 120 watts with a 10 sec recovery time.) This
option is only available if DPMS support was compiled
in.
SPECIAL MODE DEPENDENT OPTIONS
-whalespeed num
Allows one to set the speed of the whales and dolphin
in atlantis.
-/+truchet
Turn on and off Truchet lines (trail) in ant.
-/+boil
Turn on and off having the bubbles bubble up in bubble.
-nx num
Allows one to set the number of unit cells in x-
direction in crystal.
-ny num
Allows one to set the number of unit cells in y-
direction in crystal.
-/+centre
Turn on and off the centering on screen in crystal.
-/+maxsize
Turn on and off the centering on screen in crystal.
-/+cell
Turn on and off the drawing of unit cell in crystal.
-/+grid
Turn on and off the drwing of grid of unit cells (if
-cell is on) in crystal.
-/+shift
Turn on and off colour cycling in crystal.
-/+forest
Turn on and off the tropical deforest (hectares/acres)
counter in dclock.
-/+popex
Turn on and off the population explosion counter in
dclock.
-bonus value
Allows one to set the bonus for cheating... between 1.0
and 4.0 in dilemma.
-/+garden
Turn off and on garden look in daisy.
-/+conscious
Turn off and on self-awareness in dilemma.
-/+grow
Turn on and off growing fractals (else they are
animated) for drift.
-/+liss
Turn on and off using lissajous figures to get points
for drift.
-/+noants
Turn off and on ants in moebius.
-/+solidmoebius
Turn on and off solid Mobius strip in moebius.
-/+invert
Turn on and off inverting of the flag.
-/+tracks
Turn on and off star tracks in galaxy.
-/+decay
Turn on and off decaying orbits for grav.
-/+trail
Turn on and off decaying trail of dots for grav.
-/+ellipse
Turn on and off ellipse format in helix.
-/+martin
Turn on and off Barry Martin's square root hop. -
/+popcorn Turn on and off Clifford A. Pickover's pop-
corn hop.
-/+ejk1...ejk6
Turn on and off Ed J. Kubaitis' hops.
-/+rr
Turn on and off Renaldo Recuerdo's hop.
-/+jong
Turn on and off Jong's hop.
-/+sine
Turn on and off Barry Martin's sine hop.
-/+disconnected
Turn on and off disconnected pen movement in kaleid.
-/+serial
Turn on and off sequential allocation of colors in
kaleid.
-/+alternate
Turn on and off alternate rotated display mode kaleid.
-/+quad
Turn on and off quad mirrored/rotated mode similar to
size 4 in kaleid.
-/+oct
Turn on and off oct mirrored/rotated mode similar to
size 8 in kaleid.
-/+linear
Turn on and off Cartesian/Polar coordinate mode in
kaleid.
-rule S<neighborhood>/B<neighborhood>
Allows one to set life survival and birth parameters.
For example, Conway's rule is S23/B3. Special parame-
ters: P, picks a random rule from all rules that have
known patterns; G, picks a random rule from all rules
that have known gliders.
-lifefile filename
The lifefile option sets the lifeform. Only one format
is currently supported, the #P xlife format.
-/+callahan
Turn on and off Paul Callahan's S2b34/B2a hexagonal
life.
-/+andreen
Turn on and off Bob Andreen's S2a2b4a/B2a3a4b hexagonal
life.
-/+totalistic
Turn on and off totalistic rules for life1d. If this is
off then it follows rules of the LCAU collection.
These rules may not be symmetric and are more general.
-rule3d S<neighborhood>/B<neighborhood>
Allows one to set life3d survival and birth parameters.
For example, Bay's rules are S45/B5, S567/B6 S56/B5,
and S67/B67. There is currently no way of accessing
neighborhoods beyond 9. Special parameters: P, picks a
random rule from all rules that have known patterns; G,
picks a random rule from all rules that have known
gliders.
-life3dfile filename
The life3dfile option sets the lifeform. Only one for-
mat is currently supported, similar to the #P xlife
format. 2 linefeeds in a row are assumed to advance
the depth.
-/+additive
Turn on and off additive functions mode in lisa.
-/+ammann
Turn on and off lines for penrose.
-increment value
Allows fine adjustments to order in mandelbrot.
-/+erase
Turn on and off erasing for spline. If this option is
on, cycles is divided by 64 to compute the number of
lines, so as to be compatible when using -fullrandom.
-factory num
Number of extra factory parts in pipes.
-/+fisheye
Turn on if you want a zoomed-in view of pipes.
-/+tightturns
Turn on if you want the pipes to bend more often.
-/+rotatepipes
Turn on if you want the pipe system rotated in pipes.
-/+complete
Turn on or off complete graph morphing in qix.
-/+hideshuffling
Turn on or off hidden shuffle phase for rubik.
-/+border
Turn on or off borders in shape.
-/+shape
Turn on or off shadowing in shape.
-/+shape
Turn on or off stippling in shape.
-trek num
If its a high number you will see the space ship all
the time in star.
-/+rock
Turn on and off rocks for star. If this is off, stars
will be seen instead.
-/+straight
Turn on if star gets you motion sick.
-cyclepeed num
Set speed of cycling in starfish.
-rotation num
Set rotation velocity in starfish.
-thickness num
Set thickness in starfish.
-/+cycle
Turn on and off cycle for starfish.
-/+rock
Turn on and off blob for starfish.
-spinspeed num
Set speed of rotation, in degrees per frame for super-
quadrics.
-duration seconds
Allows one to set a duration for a mode in random.
Duration of 0 is defined as infinite.
-modelist textstring
Allows one to pass a list of files to randomly display
to random. "all" will get all files but blank (and bomb
if compiled in). "all,blank" will get all modes.
"all,-image bounce,+blank" will get all modes but image
and bounce. "bug wator" will get only bug and wator.
"allgl" will get only the GL modes if compiled in,
all-allgl will get all but the GL modes, "allnice" will
weed out high cpu usage modes (as well as hackers and
gl modes). "allxpm" will get all modes that use xpm.
"allwrite" will get all modes that take advantage of
writable colormaps (not including xpm). "all3d" will
get all the modes that support this option. "allmouse"
will get all the modes that support mouse interaction.
Similarly, "allautomata" for automata modes, "allfrac-
tal" for fractal modes, "allgeometry" for geometry
modes, "allspace" for space modes. The random mode
itself can not be referenced.
-/+sequential
Turn on non-random random option.
**WARNING**
xlock can appear to hang if it is competing with a high-
priority process for the CPU. For example, if xlock is
started after a process with 'nice -20' (high priority),
xlock will take considerable amount of time to respond.
SHADOW PASSWORDS
If the machine is using a shadow password system, then xlock
may not be set up to get the real password and so must be
given one of its own. This can be either on the command
line, via the -cpasswd option, or in the file
$HOME/.xlockrc, with the first taking precedence. In both
cases an encrypted password is expected (see makekey(8)).
If neither is given, then xlock will prompt for a password
and will use that, also storing an encrypted version of it
in $HOME/.xlockrc for future use.
BUGS
"kill -KILL xlock " causes the server that was locked to be
unusable, since all hosts (including localhost) were removed
from the access control list to lock out new X clients, and
since xlock could not catch SIGKILL, it terminated before
restoring the access control list. This will leave the X
server in a state where "you can no longer connect to that
server, and this operation cannot be reversed unless you
reset the server." -From the X11R4 Xlib Documen-
tation, Chapter 7.
NCD terminals do not allow xlock to remove all the hosts
from the access control list. Therefore you will need to
use the "-remote" and "-allowaccess" switches. If you hap-
pen to run without "-allowaccess" on an NCD terminal, xlock
will not work and you will need to reboot the terminal, or
simply go into the SETUP menus, under 'Network Parameters',
and turn off TCP/IP access control.
SEE ALSO
X(1), Xlib Documentation.
AUTHOR
Maintained by:
David Albert Bagley, <bagleyd@bigfoot.com>
The latest version is currently at:
ftp://ftp.tux.org/pub/tux/bagleyd/xlockmore
ftp://ftp.x.org/contrib/applications
Original Author:
Patrick J. Naughton, <naughton@eng.sun.com>
Mailstop 21-14
Sun Microsystems Laboratories, Inc.
Mountain View, CA 94043
415/336-1080
with many additional contributors.
COPYRIGHT
Copyright (c) 1988-91 by Patrick J. Naughton
Copyright (c) 1993-98 by David A. Bagley
Permission to use, copy, modify, and distribute this
software and its documentation for any purpose and without
fee is hereby granted, provided that the above copyright
notice appear in all copies and that both that copyright
notice and this permission notice appear in supporting docu-
mentation.
The original BSD daemon is Copyright (c) 1988 Marshall Kirk
McKusick. All Rights Reserved.
DEC, HP, IBM, Linux, SCO, SGI, and Sun icons have their
respective copyrights.