The following shell variables must be set appropriately for the tools to run properly:
|CDS_INST_DIR||Cadence tools installation directory|
|PATH||Directories of the executables|
|LD_LIBRARY_PATH||Tool Shared libraries (if req.)|
|SNPSLMD_LICENSE_FILE||Synopsys license file|
Each user can write their own start-up script for initialising all of these variables. Generic shell scripts for doing this are provided with some of the tools. For Cadence and Synopsys these are /vlsi/usr/cds4.43/IC/cshrc and /vlsi/usr/synopsys2000.05/cshrc respectively.