i tried to install digichat on my server

but i usually have this error

i need some on who can slove me this error and install digichat on my server

the error mesage is

root@ [~]# sh ./Install_DigiChat.bin -i console
Preparing to install...
tail: `-1' option is obsolete; use `-n 1'
Try `tail --help' for more information.
./Install_DigiChat.bin: line 329: [: `)' expected, found -z
WARNING! The amount of /tmp disk space required and/or available
could not be determined. The installation will be attempted anyway.
Extracting the JRE from the installer archive...
Unpacking the JRE...
Extracting the installation resources from the installer archive...
Configuring the installer for this system's environment...

Launching installer...

head: `-1' option is obsolete; use `-n 1'
Try `head --help' for more information.
/tmp/install.dir.28941/Linux/resource/jre/bin/i386/native_threads/java: error while loading shared libraries: libjvm.so: cannot open shared object file: No such file or directory


thanks all

As for me, better install Sun JRE, and after it install digichat