How to export environment variables from bash to tcsh

Question

I've to run a .csh script from a bash shell, to accomplish this I'm using tcsh -c <command> command but with that I also require environment variables defined in parent bash shell. Could someone suggest a way to export environment variables from bash to tcsh . I would like to have the below structure for my command.

$ tcsh -c "env ENV_VAR=${ENV_VAR} /command/to/run <args>"

Answer 1

Just add the variables to the environment of tcsh ; the script will inherit them from tcsh . (I'm assuming /command/to/run is a C-shell script.)

$ SOME_VAR="some value" tcsh -c "/command/to/run <args>"

Assuming the argument to -c isn't some more complicated C-shell expression, you can dispense with the option.

$ SOME_VAR="some value" tcsh /command/to/run <args>