tcsh script: how to see if an env var is defined?

BrianK · 06-07-2004, 09:07 PM

If I do:

Code:

#!/bin/tcsh -f

if ( ! (-e $JOB1) ) then
    echo \$JOB1 must be defined
endif

I get "JOB1: Undefined variable."

How can I test if the variable is defined or not and take my own action?

BrianK · 06-07-2004, 10:12 PM

answered my own question, it should be:

Code:

if ( ! ($?JOB1) ) then
    echo 
    echo "    *** ERROR! ***"
    echo
    echo ' '\$JOB1 must be defined
    exit
endif