setenv IMTDEV unix:$HOME/.IMTb%d
ds9 -unix_only -unix $IMTDEV:s/unix:// &
For ximtool:ximtool -unix_only -unix $IMTDEV:s/unix:// &
Note: This example assumes you are running tcsh as your shell.
Instead of $IMTDEV:s/unix://
you could of course have
typed in the file name ($HOME/.IMTb%d
in this case)
directly.