I solved it. It turns out I need to somehow supply the DISPLAY environment
to the shell which executes the application on the dumb client.
Most apps don't have a "-display" option.
ashley@ishi:~ >rsh alban
Password:
ashley@alban:~ >echo $DISPLAY
ashley@alban:~ >/usr/bin/tuxracer
*** tuxracer error: Couldn't initialize SDL: No available video device
ashley@alban:~ >export DISPLAY=:0.0
ashley@alban:~ >echo $DISPLAY
:0.0
ashley@alban:~ >/usr/bin/tuxracer
joy
I wrote a pair of scripts to accomplish this:
/usr/local/bin/ltsp_runlocal # runs on the server
# calls launch_localapp
/opt/ltsp/i386/usr/local/bin/launch_localapp # runs on the client
Theses allow me to run local apps directly from my terminal shell:
ashley@ishi:~ >ltsp_runlocal tuxracer
I also wrote a script for easy installation of local apps into the
ltsp export tree:
/usr/local/sbin/ltsp_makelocalapp
I would like to contribute these to the LTSP documentation. Who do I
talk to?
#!/bin/bash
#set -x
# ltsp_runlocal
# ashley gould [EMAIL PROTECTED]
# Fri Oct 18 01:03:35 PDT 2002
# for use with Linux Terminal Server Project
# runs an application on the client host
#
# calls the launcher wrapper on the client host and passes it the DISPLAY
# environment variable and the command line
#
# I install this to /usr/local/bin on the server
USAGE="usage: ltsp_runlocal command_name [parameters]"
# application launch wrapper run on client
# path is relative to client's root filesystem
LAUNCHER=/usr/local/bin/launch_localapp
LTSP_DIR=/opt/ltsp/i386
RSH=/usr/bin/rsh
# get the command name from input, check if it's an executable
if [ -z $1 ]; then
echo $USAGE
exit 1
elif [ ! -x "$(/usr/bin/which $1 2> /dev/null)" ]; then
echo $USAGE
echo $1 is not a valid executable
exit 1
else
COMMAND=$(/usr/bin/which $1 2> /dev/null)
fi
if [ ! -x $LTSP_DIR$COMMAND ]; then
echo $COMMAND not installed in $LTSP_DIR
exit 1
fi
# get the hostname of the client running this display
HOST=$(echo $DISPLAY | awk -F: '{ print $1 }')
# ${*#$1} this ugly stuff gives us any parameters
PARAMETERS=${*#$1}
# call the launcher on client
#echo $RSH $HOST $LAUNCHER $DISPLAY $COMMAND $PARAMETERS
$RSH $HOST $LAUNCHER $DISPLAY $COMMAND $PARAMETERS
exit 0
#!/bin/bash
# launch_localapp
# ashley gould [EMAIL PROTECTED]
# Fri Oct 18 00:51:31 PDT 2002
# for use with Linux Terminal Server Project
#
# This is the wrapper script called by ltsp_runlocal
# for launching applications that run on the client. It first sets
# the DISPLAY environment variable passed to it by ltsp_runlocal
# and then execs the application.
#
# I install it on the server at:
# /opt/ltsp/i386/usr/local/bin/launch_localapp
#
# Usage:
# ltsp_runlocal application [parameters] # runs on server
# launch_localapp displayname application [parameters] # runs on client
# get DISPLAY
export DISPLAY=$1
# launch app
# ${*#$1}
# this ugly stuff gives us the command and any parameters
#echo launch_localapp: $DISPLAY, ${*#$1}
exec ${*#$1}
#!/bin/bash
#set -x
# ltsp_makelocalapp
# ashley gould [EMAIL PROTECTED]
# Mon Oct 14 19:11:31 PDT 2002
# for use with Linux Terminal Server Project
#
# This script will copy the given executables and any needed libraries
# into the ltsp export directory. If new libs were copied over, then it
# runs ldconfig using the ltsp export tree as root.
#
# In addition, you should check if the application has its own data files
# with rpm and copy those over by hand:
#
# ishi:~ # rpm -qf `which tuxracer`
# tuxracer-0.61-141
# ishi:~ # rpm -ql tuxracer
# /usr/bin/tuxracer
# blah
# blah
# /usr/share/tuxracer
# blah
# blah
# ishi:~ # cp -av /usr/share/tuxracer /opt/ltsp/i386/usr/share/
if [ "$UID" != 0 ]; then
echo "You must be root to run this."
exit 1
fi
USAGE="usage: ltsp_makelocalapp command_name [command_name ...]"
LTSP_DIR=/opt/ltsp/i386
NEWLIB="NO"
declare -a COPY_ERROR
ERR_NUM=0
if [ $# -lt 1 ]; then
echo $USAGE
exit 1
fi
for i in $@; do
# get the program name from the command line
echo;echo
echo $i
if [ ! -x "$(/usr/bin/which $i 2> /dev/null)" ]; then
echo $USAGE
echo $i is not a valid executable
continue
else
FILE=$(/usr/bin/which $i 2> /dev/null)
fi
echo
# copy the program
if [ -x "$LTSP_DIR$FILE" ]; then
echo $FILE already an executible in $LTSP_DIR
else
echo "copying $FILE to $LTSP_DIR$FILE"
/bin/cp -a $FILE "$LTSP_DIR$FILE" || {
COPY_ERROR[$ERR_NUM]=$FILE
let "ERR_NUM = $ERR_NUM + 1"
}
fi
echo
# copy required libs
echo checking for required libs:
LIBS=$(/usr/bin/ldd $FILE 2> /dev/null |grep -v "not a "| awk '{print$ 3}')
for lib in $LIBS; do
if [ -f "$LTSP_DIR$lib" -o -L "$LTSP_DIR$lib" ]; then
echo " $lib already installed"
else
echo "copying $lib => $LTSP_DIR$lib"
/bin/cp -p $lib "$LTSP_DIR$lib"
if [ $? -ne 0 ]; then
COPY_ERROR[$ERR_NUM]=$lib
let "ERR_NUM = $ERR_NUM + 1"
else
[ $NEWLIB == "NO" ] && NEWLIB="YES"
fi
fi
done
echo
done
# run ldconfig if new libraries were copied into the ltsp tree
if [ $NEWLIB == "YES" ]; then
echo;echo
echo running ldconfig:
/sbin/ldconfig -r $LTSP_DIR -v
fi
# report file copying errors
if [ $ERR_NUM -gt 0 ]; then
echo
echo The following files could not be copied into the ltsp export tree.
echo ${COPY_ERROR[*]}
echo
echo Check the above output for /bin/cp errors.
echo Probalbly $LTSP_DIR does not have the necessary directory
echo structure to accomodate the new files. You may need to create
echo these directories by hand and rerun this script.
echo;echo
fi
exit 0
On Thu, Oct 17, 2002 at 01:04:41PM -0700, ashley wrote:
>
> Hi Randall,
>
> I run sh /tmp/start_ws from runlevel 3. I'm still testing.
>
> tuxracer seems to be the only one of these that wants a framebuffer. Do you
> know off hand what are the kernel configs for framebuffering? (You do don't
> you) I'll try a new kernel.
>
> I will still need to create the /dev/fb0 device though. How is this done in
> ltsp? And what is SDL?
>
> But I think bzflag and tuxkart errors are not related to fb device. Looks to
> me like an auth problem. I don't know. Perhaps I'll try some X apps that
> don't want DRI and see if there's a difference
>
>
>
> On Thu, Oct 17, 2002 at 12:38:30PM -0700, Randall Craig wrote:
> > Are you running these aps from a frame buffer or in xwindows?
> > > RUNLEVEL = 3
> > >
> > > ashley@alban:~ >strace tuxracer
> > > .
> > > .
> > > .
> > > open("/dev/fb0", O_RDWR) = -1 ENOENT (No such file or directory)
> > > write(2, "*** tuxracer error: ", 20*** tuxracer error: ) = 20
> > > write(2, "Couldn\'t initialize SDL: No avai"..., 50Couldn't initialize SDL: No
>available video device) = 50
> > > write(2, "\n", 1
> > > ) = 1
> > > _exit(1) = ?
> >
> > It looks to be like you are doing things from a frame buffer, which
> > may not even function with the Ltsp kernel.
> >
> >
> > -- randall.
>
> --
>
> -ashley
>
> One of these days I'm going to completely organize my life.
>
>
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--
-ashley
One of these days I'm going to completely organize my life.
Ashley Gould 510.482.0525
3020 Kansas St. [EMAIL PROTECTED]
Oakland, CA 94602
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