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</style></head><body><div class="body"><div class="sect1"><a name="binaries"/><h1 class="sect1 title"><span class="title">GDM Commands</span></h1><div class="sect2"><a name="bindir_binaries"/><h2 class="sect2 title"><span class="title"><span class="label">7.1. </span>GDM User Commands</span></h2><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The GDM package provides the following different commands in
<span class="filename" style="font-family: monospace; ">bindir</span> intended to be used by the end-user:
</p><div class="sect3"><a name="gdmxnestchoosercommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.1.1. </span><span class="command" style="font-family: monospace; ">gdmXnestchooser</span> and
<span class="command" style="font-family: monospace; ">gdmXnest</span> Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The <span class="command" style="font-family: monospace; ">gdmXnestchooser</span> command automatically gets
the correct display number, sets up access, and runs
<span class="command" style="font-family: monospace; ">Xnest</span> with -indirect localhost. This way you
get an XDMCP chooser provided by your computer. You can also supply
as an argument the hostname whose chooser should be displayed, so
<span class="command" style="font-family: monospace; ">gdmXnestchooser somehost</span> will run the XDMCP
chooser from host <span class="command" style="font-family: monospace; ">somehost</span> inside an Xnest
session. You can make this command do a direct query instead by
passing the <span class="command" style="font-family: monospace; ">-d</span> option as well. In addition to
the following options, this command also supports standard GNOME
options.
</p><div class="list"><div class="variablelist"><div class="title"><span class="title"><b><span class="command" style="font-family: monospace; ">gdmXnestchooser</span> Command Line Options</b></span></div><dl><dt><span class="term">-x, --xnest=STRING</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Xnest command line, default is "Xnest"
</p>
</dd><dt><span class="term">-o, --xnest-extra-options=OPTIONS</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Extra options for Xnest, default is no options.
</p>
</dd><dt><span class="term">-n, --no-query</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Just run Xnest, no query (no chooser)
</p>
</dd><dt><span class="term">-d, --direct</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Do direct query instead of indirect (chooser)
</p>
</dd><dt><span class="term">-B, --broadcast</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Run broadcast instead of indirect (chooser)
</p>
</dd><dt><span class="term">-b, --background</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Run in background
</p>
</dd><dt><span class="term">--no-gdm-check</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Don't check for running GDM
</p>
</dd></dl></div></div></div><div class="sect3"><a name="gdmflexichoosercommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.1.2. </span><span class="command" style="font-family: monospace; ">gdmflexichooser</span> Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The <span class="command" style="font-family: monospace; ">gdmflexiserver</span> command provides three
features. It can be used to run flexible (on demand) X displays,
to run a flexible display via Xnest, and to send commands to the
GDM daemon process.
</p><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Starting a flexible X display will normally lock the current session
with a screensaver and will redisplay the GDM login screen so a second
user can log in. This feature is only available on systems that
support virtual terminals and have them enabled. This feature is
useful if you are logged in as user A, and user B wants to log in
quickly but user A does not wish to log out. The X server takes
care of the virtual terminal switching so it works transparently.
If there is more than one running display defined with flexible=true,
then the user is shown a dialog that displays the currently running
sessions. The user can then pick which session to continue and will
normally have to enter the password to unlock the screen.
</p><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Flexible displays started via Xnest works on systems that do not
support virtual terminals. This option starts a flexible display
in a window in the current session. This does not lock the current
session, so is not as secure as a flexible server started via
virtual terminals.
</p><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The <span class="command" style="font-family: monospace; ">gdmflexiserver --command</span> option provides a way
to send commands to the GDM daemon and can be used to debug problems
or to change the GDM configuration.
</p><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
In addition to the following options,
<span class="command" style="font-family: monospace; ">gdmflexiserver</span> also supports standard GNOME
options.
</p><div class="list"><div class="variablelist"><div class="title"><span class="title"><b><span class="command" style="font-family: monospace; ">gdmflexichooser</span> Command Line Options</b></span></div><dl><dt><span class="term">-c, --command=COMMAND</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Send the specified protocol command to GDM
</p>
</dd><dt><span class="term">-n, --xnest</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Start a flexible X display in Xnest mode
</p>
</dd><dt><span class="term">-l, --no-lock</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Do not lock current screen
</p>
</dd><dt><span class="term">-d, --debug</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Turns on debugging output which gets sent to syslog. Same as
turning on debug in the configuration file.
</p>
</dd><dt><span class="term">-a, --authenticate</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Authenticate before running --command
</p>
</dd><dt><span class="term">-s, --startnew</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Starts a new flexible display without displaying a dialog
asking the user if they wish to continue any existing
sessions.
</p>
</dd></dl></div></div></div><div class="sect3"><a name="gdmdynamiccommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.1.3. </span><span class="command" style="font-family: monospace; ">gdmdynamic</span> Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The <span class="command" style="font-family: monospace; ">gdmdynamic</span> command which creates, runs, and
removes displays (X servers) on demand.
</p><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Some environments need the ability to tell GDM to create and manage new
displays on the fly, where it is not possible to list the possible
displays in GDM configuration files. The <span class="command" style="font-family: monospace; ">gdmdynamic</span>
command can be used to create a new display on a particular display
number, run all newly created displays, or remove a display. The
<span class="command" style="font-family: monospace; ">gdmdynamic</span> command can also be used to list all
attached displays, or only attached displays that match a pattern.
This program is designed to manage multiple simultaneous requests and
works to avoid flooding the daemon with requests. If the socket
connection is busy, it will sleep and retry a certain number of times
that can be tuned with the <span class="command" style="font-family: monospace; ">-t</span> and
<span class="command" style="font-family: monospace; ">-s</span> arguments. <span class="command" style="font-family: monospace; ">gdmdynamic</span>
returns 1 on normal failure, and returns 2 if it is unable to
connect to the daemon. Callers can choose to call again if a
return code of 2 is received.
</p><div class="list"><div class="variablelist"><div class="title"><span class="title"><b><span class="command" style="font-family: monospace; ">gdmdynamic</span> Command Line Options</b></span></div><dl><dt><span class="term"/></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para"><span class="emphasis" style="font-style: italic; ">
One of the following options can be used per instance:
</span></p>
</dd><dt><span class="term">-a display=server</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Add a new display configuration. For example,
<span class="command" style="font-family: monospace; ">"-a 2=StandardServerTwo"</span>
<span class="command" style="font-family: monospace; ">"-a 3=/usr/X11R6/bin/X -dev /dev/fb2"</span>
</p>
</dd><dt><span class="term">-r</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Release (run) all displays waiting in the DISPLAY_CONFIG state.
</p>
</dd><dt><span class="term">-d display</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Delete a display, killing the X server and purging the
display configuration. For example, "-d 3".
</p>
</dd><dt><span class="term">-l [pattern]</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
List displays via the ATTACHED_SERVERS command. Without a pattern
lists all attached displays. With a pattern will match using glob
characters '*', '?', and '[]'. For example:
<span class="command" style="font-family: monospace; ">"-l Standard*"</span>
<span class="command" style="font-family: monospace; ">"-l *Xorg*"</span>
</p>
</dd><dt><span class="term"/></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para"><span class="emphasis" style="font-style: italic; ">
These options can be added to the above:
</span></p>
</dd><dt><span class="term">-v</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Verbose mode. Prinr diagnostic messages about each message sent
to GDM.
</p>
</dd><dt><span class="term">-b</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Background mode. Fork child to do the work and return immediately.
</p>
</dd><dt><span class="term">-t RETRY</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
If the daemon socket is busy, <span class="command" style="font-family: monospace; ">gdmdynamic</span> will
retry to open the connection the specified RETRY number of times.
Default value is 15.
</p>
</dd><dt><span class="term">-s SLEEP</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
If the daemon socket is busy, <span class="command" style="font-family: monospace; ">gdmdynamic</span> will
sleep an amount of time between retries. A random number of
seconds 0-5 is added to the SLEEP value to help ensure that
multiple calls to gdmdynamic do not all try to restart at the
same time. A SLEEP value of zero causes the sleep time to be
1 second. Default value is 8 seconds.
</p>
</dd></dl></div></div></div><div class="sect3"><a name="gdmphotosetupcommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.1.4. </span><span class="command" style="font-family: monospace; ">gdmphotosetup</span> Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Allows the user to select an image that will be used as the user's
photo by GDM's face browser, if enabled by GDM. The selected file
is stored as <span class="filename" style="font-family: monospace; ">~/.face</span>. This command accepts
standard GNOME options.
</p></div><div class="sect3"><a name="gdmthemetestercommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.1.5. </span><span class="command" style="font-family: monospace; ">gdmthemetester</span> Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
<span class="command" style="font-family: monospace; ">gdmthemetester</span> takes two parameters. The first
parameter specifies the environment and the second parameter
specifies the path name or the name of a theme to view.
This is a tool for viewing a theme outside of GDM. It is useful for
testing or viewing themes. <span class="command" style="font-family: monospace; ">gdmthemetester</span> requires
that the system support <span class="command" style="font-family: monospace; ">gdmXnest</span>.
Note that themes can display differently depending on the theme's
"Show mode". <span class="command" style="font-family: monospace; ">gdmthemetester</span> allows
viewing the themes in different modes via the environment option.
Valid environment values and their meanings follow:
<div class="screen block-indent"><pre class="screen">console - In console mode.
console-timed - In console non-flexi mode.
flexi - In flexi mode.
xdmcp - In remote (XDMCP) mode.
remote-flexi - In remote (XDMCP) & flexi mode.
</pre></div>
</p></div></div><div class="sect2"><a name="sbindir_binaries"/><h2 class="sect2 title"><span class="title"><span class="label">7.2. </span>GDM Root User Commands</span></h2><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The GDM package provides the following different commands in
<span class="filename" style="font-family: monospace; ">sbindir</span> intended to be used by the root user:
</p><div class="sect3"><a name="gdmcommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.2.1. </span><span class="command" style="font-family: monospace; ">gdm</span> and <span class="command" style="font-family: monospace; ">gdm-binary</span>
Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The <span class="command" style="font-family: monospace; ">gdm</span> command is really just a script which
runs the <span class="command" style="font-family: monospace; ">gdm-binary</span>, passing along any options.
Before launching <span class="command" style="font-family: monospace; ">gdm-binary</span>, the gdm wrapper script
will source the <span class="filename" style="font-family: monospace; "><etc>/profile</span> file to set
the standard system environment variables. In order to better support
internationalization, it will also set the LC_MESSAGES environment
variable to LANG if neither LC_MESSAGES or LC_ALL are set. If you
really need to set some additional environment before launching GDM,
you can do so in this script.
</p><div class="list"><div class="variablelist"><div class="title"><span class="title"><b><span class="command" style="font-family: monospace; ">gdm</span> and <span class="command" style="font-family: monospace; ">gdm-binary</span>
Command Line Options</b></span></div><dl><dt><span class="term">--help</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Gives a brief overview of the command line options.
</p>
</dd><dt><span class="term">--nodaemon</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
If this option is specified, then GDM does not fork into the
background when run. You can also use a single-dash version,
"-nodaemon" for compatibility with other display
managers.
</p>
</dd><dt><span class="term">--no-console</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Tell the daemon that it should not run anything on the console.
This means that none of the local servers from the
<span class="filename" style="font-family: monospace; ">[servers]</span> section will be run, and the
console will not be used for communicating errors to the user.
An empty <span class="filename" style="font-family: monospace; ">[servers]</span> section automatically
implies this option.
</p>
</dd><dt><span class="term">--config=CONFIGFILE</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Specify an alternative configuration file.
</p>
</dd><dt><span class="term">--preserve-ld-vars</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
When clearing the environment internally, preserve all variables
starting with LD_. This is mostly for debugging purposes.
</p>
</dd><dt><span class="term">--version</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Print the version of the GDM daemon.
</p>
</dd><dt><span class="term">--wait-for-go</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
If started with this option, gdm will init, but only start the
first local display and then wait for a GO message in the fifo
protocol. No greeter will be shown until the GO message is
sent. Also flexiserver requests will be denied and XDMCP will
not be started until GO is given. This is useful for
initialization scripts which wish to start X early, but where
you don't yet want the user to start logging in. So the script
would send the GO to the fifo once it is ready and GDM will
then continue. This functionality was added in version
2.5.90.0.
</p>
</dd></dl></div></div></div><div class="sect3"><a name="gdmsetupcommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.2.2. </span><span class="command" style="font-family: monospace; ">gdmsetup</span> Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
<span class="command" style="font-family: monospace; ">gdmsetup</span> runs a graphical application for modifying
the GDM configuration file. Normally on systems that support
the PAM userhelper, this is setup such that when you run
<span class="command" style="font-family: monospace; ">gdmsetup</span> as an ordinary user, it will first
ask you for your root password before starting. Otherwise, this
application may only be run as root. This application supports
standard GNOME options.
</p></div><div class="sect3"><a name="gdmrestartcommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.2.3. </span><span class="command" style="font-family: monospace; ">gdm-restart</span> Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
<span class="command" style="font-family: monospace; ">gdm-restart</span> stops and restarts GDM by sending
the GDM daemon a HUP signal. This command will immediately terminate
all sessions and log out users currently logged in with GDM.
</p></div><div class="sect3"><a name="gdmsaferestartcommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.2.4. </span><span class="command" style="font-family: monospace; ">gdm-safe-restart</span> Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
<span class="command" style="font-family: monospace; ">gdm-safe-restart</span> stops and restarts GDM by
sending the GDM daemon a USR1 signal. GDM will be restarted as soon
as all users log out.
</p></div><div class="sect3"><a name="gdmstopcommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.2.5. </span><span class="command" style="font-family: monospace; ">gdm-stop</span> Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
<span class="command" style="font-family: monospace; ">gdm-stop</span> stops GDM by sending the GDM daemon
a TERM signal.
</p></div></div><div class="sect2"><a name="libexecdir_binaries"/><h2 class="sect2 title"><span class="title"><span class="label">7.3. </span>GDM Internal Commands</span></h2><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The GDM package provides the following different commands in
<span class="filename" style="font-family: monospace; ">libexecdir</span> intended to be used by the gdm
daemon process.
</p><div class="sect3"><a name="gdmgreeterlogincommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.3.1. </span><span class="command" style="font-family: monospace; ">gdmchooser</span> and <span class="command" style="font-family: monospace; ">gdmlogin</span>
Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The <span class="command" style="font-family: monospace; ">gdmgreeter</span> and <span class="command" style="font-family: monospace; ">gdmlogin</span>
are two different login applications, either can be used by GDM.
<span class="command" style="font-family: monospace; ">gdmgreeter</span> is themeable with GDM themes while
<span class="command" style="font-family: monospace; ">gdmlogin</span> is themable with GTK+ themes. These
applications are normally executed by the GDM daemon. Both commands
support standard GNOME options.
</p></div><div class="sect3"><a name="gdmchoosercommandline"/><h3 class="sect3 title"><span class="title"><span class="label">7.3.2. </span><span class="command" style="font-family: monospace; ">gdmchooser</span> Command Line Options</span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The <span class="command" style="font-family: monospace; ">gdmchooser</span> is the XDMCP chooser application.
The <span class="command" style="font-family: monospace; ">gdmchooser</span> is normally executed by the GDM
daemon. It supports the following options for XDM compatibility.
This command supports standard GNOME options and is found in
support standard GNOME options.
</p><div class="list"><div class="variablelist"><div class="title"><span class="title"><b><span class="command" style="font-family: monospace; ">gdmchooser</span> Command Line Options</b></span></div><dl><dt><span class="term">--xdmaddress=SOCKET</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Socket for XDM communication.
</p>
</dd><dt><span class="term">--clientaddress=ADDRESS</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Client address to return in response to XDM. This option is for
running gdmchooser with XDM, and is not used within GDM.
</p>
</dd><dt><span class="term">--connectionType=TYPE</span></dt><dd>
<p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
Connection type to return in response to XDM. This option is for
running gdmchooser with XDM, and is not used within GDM.
</p>
</dd></dl></div></div></div><div class="sect3"><a name="gdm-ssh-session"/><h3 class="sect3 title"><span class="title"><span class="label">7.3.3. </span><span class="command" style="font-family: monospace; ">gdm-ssh-session</span></span></h3><p xmlns:msg="http://www.gnome.org/~shaunm/gnome-doc-utils/l10n" class="para">
The <span class="command" style="font-family: monospace; ">gdm-ssh-session</span> is normally executed by the
GDM daemon when starting a secure remote connection through ssh.
It does not take any options.
</p></div></div></div></div><div class="navbar"><div class="navbar-prev"><span class="navbar-prev"><a class="navbar navbar-prev" href="controlling.xhtml" title="Controlling GDM">Controlling GDM</a></span></div><div class="navbar-next"><span class="navbar-next"><a class="navbar navbar-next" href="thememanual.xhtml" title="Themed Greeter">Themed Greeter</a></span></div></div></body></html>
