Save stuff below as a .sh in your checkout XBMC folder
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#!/bin/sh
#
# $Header$
#unix shell script to fetch latest svn, make, then run the fresh compilation
#script should work if you followed Readme.Linux and have extracted a T3CH builds XBMC folder to $HOME/Desktop
#userconfig begins
home_folder=$HOME
aux_folder=/Desktop/XBMC #where under $HOME the extracted XBMC folder is located
#userconfig ends
clear
echo "---> Doing a SVN Checkout"
cd $home_folder
svn checkout https://xbmc.svn.sourceforge.net/svnroot/xbmc/branches/linuxport/XBMC
clear
echo "---> cleaning old compile ..."
cd XBMC
make clean
clear
echo "---> ... and making a new compile"
make
if [ $? -eq 1 ]
then
echo "$0 : ***ERROR*** Build failed, aborting..."
exit 1
fi
clear
echo "---> Copying file "
cd $home_folder
cp -v XBMC/XboxMediaCenter $home_folder$aux_folder
if [ $? -eq 1 ]
then
echo "$0 : ***ERROR*** Copy Failed"
exit 1
fi
clear
echo "---> Running XBMC"
$home_folder$aux_folder/XboxMediaCenter
echo "Thanks for testing Linux XBMC!!"