Install QuartusII 10.1 to Ubuntu 10.04 error!

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i installed it, but i dont know how to run, does any one have a idea?

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1. sudo gedit /etc/profile

2. Add this setting in the file end.

SOPC_KIT_NIOS2=/home/XXX/altera/10.1/nios2eds

SOPC_BUILDER_PATH=/home/XXX/altera/10.1/nios2eds

QUARTUS_ROOTDIR=/home/XXX/altera/10.1/quartus PATH=$PATH:/home/XXX/altera/10.1/quartus/bin:/home/XXX/altera/10.1/nios2eds/bin:/home/XXX/altera/10.1/quartus/linux

PATH=$PATH:/home/XXX/altera/10.1/modelsim_ae/linuxaloem:/home/XXX/altera/10.1/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin

LD_LIBRARY_PATH=/lib:/usr/lib:/home/XXX/altera/10.1/linux

unset GCC_EXEC_PREFIX

export LM_LICENSE_FILE QUARTUS_ROOTDIR SOPC_KIT_NIOS2 SOPC_BUILDER_PATH

export PATH LD_LIBRARY_PATH QUARTUS_64BIT

/* XXX is your name */

3. reboot your system

4. Type quartus in command line.