Re: [suse-programming-e] Minor tcsh problem (undefined variable message).. .

dries wrote:

Hello all,, ,

I've made tcsh script that uses a environment variable that can be defined or not, the script works, but if the variable is not defined i get the message 'carrotcount: Undefined variable.'

from the example script below . . .

#!/usr/bin/tcsh echo $carrotcount

My question is : is there a way to suppress the 'undefined variable' message or can i check wether it is defined (in a tcsh script) . .

Grtz Dries Pruimboom

man tcsh on my SuSE 8.2 turned up this under the "Variables" section : . . . . The following substitutions can not be modified with `:' modifiers. $?name ${?name} Substitutes the string `1' if name is set, `0' if it is not. HTH, YMMV, & all that.