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authorNicolás Reynolds <fauno@endefensadelsl.org>2014-07-26 03:59:52 +0000
committerNicolás Reynolds <fauno@endefensadelsl.org>2014-07-26 03:59:52 +0000
commit3f8fdc60f0dbd72d350af3927657f9ff97eb249f (patch)
tree65ccd3339fb817893cfd5189826d671a3303385a /extra/xorg-server/xvfb-run.1
parent29cefdccedfcb48822a8da80b259ed0bb0f73266 (diff)
Sat Jul 26 03:49:34 UTC 2014
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-.\" $Id: xvfb-run.1 2138 2005-01-17 23:40:27Z branden $
-.\"
-.\" Copyright 1998-2004 Branden Robinson <branden@debian.org>.
-.\"
-.\" This is free software; you may redistribute it and/or modify
-.\" it under the terms of the GNU General Public License as
-.\" published by the Free Software Foundation; either version 2,
-.\" or (at your option) any later version.
-.\"
-.\" This is distributed in the hope that it will be useful, but
-.\" WITHOUT ANY WARRANTY; without even the implied warranty of
-.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-.\" GNU General Public License for more details.
-.\"
-.\" You should have received a copy of the GNU General Public License with
-.\" the Debian operating system, in /usr/share/common-licenses/GPL; if
-.\" not, write to the Free Software Foundation, Inc., 59 Temple Place,
-.\" Suite 330, Boston, MA 02111-1307 USA
-.\"
-.\" We need the URL macro from groff's www macro package, but also want
-.\" things to work all right for people who don't have it. So we define
-.\" our own URL macro and let the www macro package override it if it's
-.\" available.
-.de URL
-\\$2 \(laURL: \\$1 \(ra\\$3
-..
-.if \n[.g] .mso www.tmac
-.TH xvfb\-run 1 "2004\-11\-12" "Debian Project"
-.SH NAME
-xvfb\-run \- run specified X client or command in a virtual X server environment
-.SH SYNOPSIS
-.B xvfb\-run
-[
-.I options
-]
-.I command
-.SH DESCRIPTION
-.B xvfb\-run
-is a wrapper for the
-.BR Xvfb (1x)
-command which simplifies the task of running commands (typically an X
-client, or a script containing a list of clients to be run) within a virtual
-X server environment.
-.PP
-.B xvfb\-run
-sets up an X authority file (or uses an existing user\-specified one),
-writes a cookie to it (see
-.BR xauth (1x))
-and then starts the
-.B Xvfb
-X server as a background process.
-The process ID of
-.B Xvfb
-is stored for later use.
-The specified
-.I command
-is then run using the X display corresponding to the
-.B Xvfb
-server
-just started and the X authority file created earlier.
-.PP
-When the
-.I command
-exits, its status is saved, the
-.B Xvfb
-server is killed (using the process ID stored earlier), the X authority
-cookie removed, and the authority file deleted (if the user did not specify
-one to use).
-.B xvfb\-run
-then exits with the exit status of
-.IR command .
-.PP
-.B xvfb\-run
-requires the
-.B xauth
-command to function.
-.SH OPTIONS
-.TP
-.B \-a\fR,\fB \-\-auto\-servernum
-Try to get a free server number, starting at 99, or the argument to
-.BR \-\-server\-num .
-.TP
-.BI \-e\ file \fR,\fB\ \-\-error\-file= file
-Store output from
-.B xauth
-and
-.B Xvfb
-in
-.IR file .
-The default is
-.IR /dev/null .
-.TP
-.BI \-f\ file \fR,\fB\ \-\-auth\-file= file
-Store X authentication data in
-.IR file .
-By default, a temporary directory called
-.IR xvfb\-run. PID
-(where PID is the process ID of
-.B xvfb\-run
-itself) is created in the directory specified by the environment variable
-.B TMPDIR
-(or
-.I /tmp
-if that variable is null or unset), and the
-.BR tempfile (1)
-command is used to create a file in that temporary directory called
-.IR Xauthority .
-.TP
-.B \-h\fR,\fB \-\-help
-Display a usage message and exit.
-.TP
-.BI \-n\ servernumber \fR,\fB\ \-\-server\-num= servernumber
-Use
-.I servernumber
-as the server number (but see the
-.B \-a\fR,\fB \-\-auto\-servernum
-option above).
-The default is 99.
-.TP
-.B \-l\fR,\fB \-\-listen\-tcp
-Enable TCP port listening in the X server.
-For security reasons (to avoid denial\-of\-service attacks or exploits),
-TCP port listening is disabled by default.
-.TP
-.BI \-p\ protocolname \fR,\fB\ \-\-xauth\-protocol= protocolname
-Use
-.I protocolname
-as the X authority protocol to use.
-The default is \(oq.\(cq, which
-.B xauth
-interprets as its own default protocol, which is MIT\-MAGIC\-COOKIE\-1.
-.TP
-.BI \-s\ arguments \fR,\fB\ \-\-server\-args= arguments
-Pass
-.I arguments
-to the
-.B Xvfb
-server.
-Be careful to quote any whitespace characters that may occur within
-.I arguments
-to prevent them from regarded as separators for
-.BR xvfb\-run 's
-own arguments.
-Also, note that specification of \(oq\-nolisten tcp\(cq in
-.I arguments
-may override the function of
-.BR xvfb\-run 's
-own
-.B \-l\fR,\fB \-\-listen\-tcp
-option, and that specification of the server number (e.g., \(oq:1\(cq) may
-be ignored because of the way the X server parses its argument list.
-Use the
-.B xvfb\-run
-option
-.BI \-n\ servernumber \fR,\fB\ \-\-server\-num= servernumber
-to achieve the latter function.
-The default is \(oq\-screen 0 640x480x8\(cq.
-.TP
-.BI \-w\ delay \fR,\fB\ \-\-wait= delay
-Wait
-.I delay
-seconds after launching
-.B Xvfb
-before attempting to start the specified command.
-The default is 3.
-.SH ENVIRONMENT
-.TP
-.B COLUMNS
-indicates the width of the terminal device in character cells.
-This value is used for formatting diagnostic messages.
-If not set, the terminal is queried using
-.BR stty (1)
-to determine its width.
-If that fails, a value of \(oq80\(cq is assumed.
-.TP
-.B TMPDIR
-specifies the directory in which to place
-.BR xvfb\-run 's
-temporary directory for storage of the X authority file; only used if the
-.B \-f
-or
-.B \-\-auth\-file
-options are not specified.
-.SH "OUTPUT FILES"
-.PP
-Unless the
-.B \-f
-or
-.B \-\-auth\-file
-options are specified, a temporary
-directory and file within it are created (and deleted) to store the X
-authority cookies used by the
-.B Xvfb
-server and client(s) run under it.
-See
-.BR tempfile (1).
-If \-f or \-\-auth\-file are used, then the specified X authority file is
-only written to, not created or deleted (though
-.B xauth
-creates an authority file itself if told to use use that does not already
-exist).
-.PP
-An error file with a user\-specified name is also created if the
-.B \-e
-or
-.B \-\-error\-file
-options are specifed; see above.
-.SH "EXIT STATUS"
-.B xvfb\-run
-uses its exit status as well as output to standard error to communicate
-diagnostics.
-The exit status of \(oq1\(cq is not used, and should be interpreted as failure
-of the specified command.
-.TP
-0
-.B xvfb\-run
-only uses this exit status if the
-.B \-h\fR,\fB \-\-help
-option is given.
-In all other situations, this may be interpreted as success of the specified
-command.
-.TP
-2
-No command to run was specified.
-.TP
-3
-The
-.B xauth
-command is not available.
-.TP
-4
-The temporary directory that was going to be used already exists; since
-.B xvfb\-run
-produces a uniquely named directory, this may indicate an attempt by another
-process on the system to exploit a temporary file race condition.
-.TP
-5
-A problem was encountered while cleaning up the temporary directory.
-.TP
-6
-A problem was encountered while using
-.BR getopt (1)
-to parse the command\-line arguments.
-.SH EXAMPLES
-.TP
-.B xvfb\-run \-\-auto\-servernum \-\-server\-num=1 xlogo
-runs the
-.BR xlogo (1x)
-demonstration client inside the
-.B Xvfb
-X server on the first available server number greater than or equal to 1.
-.TP
-.B xvfb\-run \-\-server\-args="\-screen 0 1024x768x24" ico \-faces
-runs the
-.BR ico (1x)
-demonstration client (and passes it the
-.B \-faces
-argument) inside the
-.B Xvfb
-X server, configured with a root window of 1024 by 768 pixels and a color
-depth of 24 bits.
-.PP
-Note that the demo X clients used in the above examples will not exit on
-their own, so they will have to be killed before
-.B xvfb\-run
-will exit.
-.SH BUGS
-See
-.URL "http://bugs.debian.org/xvfb" "the Debian Bug Tracking System" .
-If you wish to report a bug in
-.BR xvfb\-run ,
-please use the
-.BR reportbug (1)
-command.
-.SH AUTHOR
-.B xfvb\-run
-was written by Branden Robinson and Jeff Licquia with sponsorship from
-Progeny Linux Systems.
-.SH "SEE ALSO"
-.BR Xvfb (1x),
-.BR xauth (1x)
-.\" vim:set et tw=80: