how to set enviroment variables in redhat

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hi,
I install some eda tools which require to set some enviroment variables, such as LM_LICENSE_FILE and CDS_ROOT etc, to the system, however I don't how to do so that i can use it when the system sets up each time.
do I require to write some command to the /etc/bashrc or /etc/profile files?
can someone tell me?
thanks a lot
 

If you work in bash,you can edit the file" ~/.bashrc"!
for example
" export var=abcd "
 

Hi

How does one include directories to search for in the PATH variable
 

In RedHat, I have always added some lines to /etc/profile file. for defining new environment variables such as LM_LICENSE_FILE for example you may add the following line at the end of your profile file:
export LM_LICENSE_FILE=/usr/syn/license.dat
and again, if you want to make a more complete PATH env variable: (example)
export PATH=$PATH:/usr/syn:/home/aaa
this adds two new addresses to your path env variable.
 

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