Download the correct version aka ~63Mb
cp tar xvfz xampp-linux-1.7.3a.tar.gz /
mkdir /opt
tar -xzvf xampp-linux-1.7.3a.tar.gz -C /opt
( extract to /opt )
from '/' directory issue the command
su root /opt/lampp/lampp start [enter]
I had the same problem when i started lampp from its working directory
i.e
cd /opt/lampp/
lampp start
lampp: line 129: command not found startapache
lampp:line 130: command not found startmysql
lampp: line 131: command not found startftp
good luck!