vi .bashrc
source /opt/Xilinx/12.1/ISE_DS/ISE/settings32.sh
source /opt/Xilinx/12.1/ISE_DS/EDK/settings32.sh
source /opt/Xilinx/12.1/ISE_DS/common/settings32.sh
source /opt/Xilinx/12.1/ISE_DS/PlanAhead/settings32.sh
source /opt/Xilinx/12.1/ISE_DS/settings32.sh
export LM_LICENSE_FILE=/opt/modelsim/modeltech/license.dat
export PATH=$PATH:/opt/modelsim/modeltech/linux
export PATH=/opt/sparc-elf-4.4.2/bin:$PATH
TCL_LIBRARY=/usr/local/lib/tcl8.4;export TCL_LIBRARY
TK_LIBRARY=/usr/local/lib/tk8.4;export TK_LIBRARY