Setting environment variables in tcsh

[masai]

Hi,
I am using tcsh shell and have
#!/bin/tcsh
as my 1st line of shell script.

When I directly type on the unix shell the following line works succesfully.
setenv MODEL_ROOT=/proj/aps/storm/logic/gold/CURRENT/

I know it because when I use echo, it reflects the change.

However, when I try to automate it in a script, the following line always fails.
less ./wrapper_runtest.o* | grep SCRIPTS_RUN_PATH | grep /$ | awk '{print "setenv "$1" "$2}' | tcsh

I am reading a file called wrapper_runtest.o* and $2 has the desired path in the file. $1 and $2 are parsing as expected but the assignment using setenv fails.

I tried several different things but the environment variable just wont get set to the desired path.
Can you please help me?

[Rubberman]

Environment variables are context-sensitive. Ie, when you set them in a shell or any other program, they go away when the shell/program exits. To propagate the variables set in a shell script, you need to source it either with the "source" or "." commands from the top-level shell. So, if your script is named "setvars.sh" and it looks like this:

setenv MODEL_ROOT=/proj/aps/storm/logic/gold/CURRENT/

Then from your shell, do this:

source setvars.sh

Now you will see the environment variable MODEL_ROOT in your local context because the "source" command executes in the current shell context.

[masai]

Thanks a lot Rubberman. That helps a lot. Never thought of it from that angle.