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Hi! I have another question, in my script I am inputing a file and I want to include a command so that my script will do a certain thing if the input file is a .txt file and do something else if the input file is a .fit file. Does anyone know what the command is?

You can use something like[code:1:fff426684d]
fname = "foo.fit"
len = strlen (fname)
extn = substr (fname, len-2, len)
if (extn == "fit") {
....something
} else if (extn == "txt") {
....something else
}
[/code:1:fff426684d]Another way to handle it is just to have separate parameters for images and text files and key off of whether the parameter is set.-Mike