[الملك الحزين]

hello,
when i try install digichat
i find this


root@server # 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tail: `-1' option is obsolete; use `-n 1'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head: `-1' option is obsolete; use `-n 1'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.28541/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
root@server #
why i can't installed it please help me in this problem i am install the last version of java "j2sdk1.5.0"
so what can i do for that