No SLES11, o Xvfb é fornecido pelo xorg-x11-server-extra.
Estou configurando um servidor da Web OpenSuse e preciso executar o CutyCapt e o XVFB, mas não posso encontrá-lo em nenhum dos repositórios. Estou executando o OpenSuse 11.4 x64 sem a GUI da área de trabalho.
Algum conselho sobre por onde começar?
No OpenSUSE 11.4:
pdo@opensuse:~> rpm -q --whatprovides /usr/bin/Xvfb
xorg-x11-server-7.6_1.9.3-15.18.4.x86_64
Então, basta instalar o xorg-x11-server (e suas inúmeras dependências):
pdo@opensuse:~> sudo zypper install -y xorg-x11-server
pdo@opensuse:~> /usr/bin/Xvfb
Você não precisa instalar um ambiente de área de trabalho nem nada, e sua máquina ainda inicializa em um prompt de login no modo de texto.
xvfb-run aparentemente não é um binário real, mas um script, conforme este site .
On Debian based distributions it is quite easy. The package is called xvfb and an application can be executed in it with xvfb-run -a APPLICATION. On RPM based distributions, it is not so easy. But with help of the table below, it is easy to find out the package name of xvfb on each distribution. You can also see if the script is shipped with the package ore not and if not, it can be downloaded from here.
O script parece ser idêntico para o OpenSUSE e o CentOS / RHEL, aqui está:
#!/bin/sh
# $Id: xvfb-run 2027 2004-11-16 14:54:16Z branden $
# This script starts an instance of Xvfb, the "fake" X server, runs a command
# with that server available, and kills the X server when done. The return
# value of the command becomes the return value of this script.
#
# If anyone is using this to build a Debian package, make sure the package
# Build-Depends on xvfb, xbase-clients, and xfonts-base.
set -e
PROGNAME=xvfb-run
SERVERNUM=99
AUTHFILE=
ERRORFILE=/dev/null
STARTWAIT=3
XVFBARGS="-screen 0 640x480x8"
LISTENTCP="-nolisten tcp"
XAUTHPROTO=.
# Query the terminal to establish a default number of columns to use for
# displaying messages to the user. This is used only as a fallback in the event
# the COLUMNS variable is not set. ($COLUMNS can react to SIGWINCH while the
# script is running, and this cannot, only being calculated once.)
DEFCOLUMNS=$(stty size 2>/dev/null | awk '{print $2}') || true
if ! expr "$DEFCOLUMNS" : "[[:digit:]]\+$" >/dev/null 2>&1; then
DEFCOLUMNS=80
fi
# Display a message, wrapping lines at the terminal width.
message () {
echo "$PROGNAME: $*" | fmt -t -w ${COLUMNS:-$DEFCOLUMNS}
}
# Display an error message.
error () {
message "error: $*" >&2
}
# Display a usage message.
usage () {
if [ -n "$*" ]; then
message "usage error: $*"
fi
cat <<EOF
Usage: $PROGNAME [OPTION ...] COMMAND
Run COMMAND (usually an X client) in a virtual X server environment.
Options:
-a --auto-servernum try to get a free server number, starting at
--server-num
-e FILE --error-file=FILE file used to store xauth errors and Xvfb
output (default: $ERRORFILE)
-f FILE --auth-file=FILE file used to store auth cookie
(default: ./.Xauthority)
-h --help display this usage message and exit
-n NUM --server-num=NUM server number to use (default: $SERVERNUM)
-l --listen-tcp enable TCP port listening in the X server
-p PROTO --xauth-protocol=PROTO X authority protocol name to use
(default: xauth command's default)
-s ARGS --server-args=ARGS arguments (other than server number and
"-nolisten tcp") to pass to the Xvfb server
(default: "$XVFBARGS")
-w DELAY --wait=DELAY delay in seconds to wait for Xvfb to start
before running COMMAND (default: $STARTWAIT)
EOF
}
# Find a free server number by looking at .X*-lock files in /tmp.
find_free_servernum() {
# Sadly, the "local" keyword is not POSIX. Leave the next line commented in
# the hope Debian Policy eventually changes to allow it in /bin/sh scripts
# anyway.
#local i
i=$SERVERNUM
while [ -f /tmp/.X$i-lock ]; do
i=$(($i + 1))
done
echo $i
}
# Clean up files
clean_up() {
if [ -e "$AUTHFILE" ]; then
XAUTHORITY=$AUTHFILE xauth remove ":$SERVERNUM" >>"$ERRORFILE" 2>&1
fi
if [ -n "$XVFB_RUN_TMPDIR" ]; then
if ! rm -r "$XVFB_RUN_TMPDIR"; then
error "problem while cleaning up temporary directory"
exit 5
fi
fi
}
# Parse the command line.
ARGS=$(getopt --options +ae:f:hn:lp:s:w: \
--long auto-servernum,error-file:,auth-file:,help,server-num:,listen-tcp,xauth-protocol:,server-args:,wait: \
--name "$PROGNAME" -- "$@")
GETOPT_STATUS=$?
if [ $GETOPT_STATUS -ne 0 ]; then
error "internal error; getopt exited with status $GETOPT_STATUS"
exit 6
fi
eval set -- "$ARGS"
while :; do
case "$1" in
-a|--auto-servernum) SERVERNUM=$(find_free_servernum) ;;
-e|--error-file) ERRORFILE="$2"; shift ;;
-f|--auth-file) AUTHFILE="$2"; shift ;;
-h|--help) SHOWHELP="yes" ;;
-n|--server-num) SERVERNUM="$2"; shift ;;
-l|--listen-tcp) LISTENTCP="" ;;
-p|--xauth-protocol) XAUTHPROTO="$2"; shift ;;
-s|--server-args) XVFBARGS="$2"; shift ;;
-w|--wait) STARTWAIT="$2"; shift ;;
--) shift; break ;;
*) error "internal error; getopt permitted \"$1\" unexpectedly"
exit 6
;;
esac
shift
done
if [ "$SHOWHELP" ]; then
usage
exit 0
fi
if [ -z "$*" ]; then
usage "need a command to run" >&2
exit 2
fi
if ! which xauth >/dev/null; then
error "xauth command not found"
exit 3
fi
# tidy up after ourselves
trap clean_up EXIT
# If the user did not specify an X authorization file to use, set up a temporary
# directory to house one.
if [ -z "$AUTHFILE" ]; then
XVFB_RUN_TMPDIR="${TMPDIR:-/tmp}/$PROGNAME.$$"
if ! mkdir -p -m 700 "$XVFB_RUN_TMPDIR"; then
error "temporary directory $XVFB_RUN_TMPDIR already exists"
exit 4
fi
AUTHFILE=$(mktemp -p "$XVFB_RUN_TMPDIR" -t Xauthority.XXXXXXXX)
fi
# Start Xvfb.
MCOOKIE=$(mcookie)
XAUTHORITY=$AUTHFILE xauth add ":$SERVERNUM" "$XAUTHPROTO" "$MCOOKIE" \
>>"$ERRORFILE" 2>&1
XAUTHORITY=$AUTHFILE Xvfb ":$SERVERNUM" $XVFBARGS $LISTENTCP >>"$ERRORFILE" \
2>&1 &
XVFBPID=$!
sleep "$STARTWAIT"
if ! kill -0 $XVFBPID 2>/dev/null; then
echo "Xvfb failed to start" >&2
exit 1
fi
# Start the command and save its exit status.
set +e
DISPLAY=:$SERVERNUM XAUTHORITY=$AUTHFILE "$@" 2>&1
RETVAL=$?
set -e
# Kill Xvfb now that the command has exited.
kill $XVFBPID
# Return the executed command's exit status.
exit $RETVAL
# vim:set ai et sts=4 sw=4 tw=80:
Pessoalmente, em seguida, recebi o erro
which: no xauth in (/sbin:/usr/sbin:/usr/local/sbin:/root/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/usr/games)
xvfb-run: error: xauth command not found
O que foi corrigido simplesmente instalando xauth via yast .