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[gonzalo infante llorca]

Dear grads users,
i am trying to execute  a grads script from a bash script.
The grads script need as an input the filenames to open.
It works ok if i write from the grads comand line
ga> myscript filename 1 filename2

but if i try to execute from the terminal command line like
grads -bc myscript filename1 filename2
nothing happens.
Also note that my script is consist on a main funcion like


function main(arg)

 if (arg='')
      say 'necesitamos los dos ficheros de datos a abrir'
      say 'primero el del del análisis y luego las predicciones'
        return
endif

fichero1=subwrd(arg,1)
fichero2=subwrd(arg,2)
....
end
Any idea on how to pass the input argument from command line or bash script??
Thanks in advance
Gonzalo