Shell Programming and Scripting

No doubt, I will be doing so. This response didn't infer anything other than just that, in response to shamrock.

To clarify, my current script is written in bash. As of yesterday, this script has been put on a slight hold, to address some high priority IT Security concerns. So I will not be editing my script and testing the suggestion this week.

To determine whether or not any field is valid and to determine whether or not fields are out of order, you first need to have a clear definition of your filename format and a clear definition of what contents are valid in each field. You have shown us three examples of (presumably valid) filenames:

Code:

test-1983_filename-123.tif
bldg1-1996-org101_F-12345.tif
bldgzone-2001-org234_ZTW-12345.tif

and a valid filename format:

Code:

locationabbreviation-year-orgnumber_imagenumber.tif

(which has hyphens and underscores that do not match any of the sample filenames). Are hyphens and underscores interchangeable? In addition to be field separators, are hyphens and underscores valid characters in some fields???

And then you tell us that one of four of the five fields in your valid filename format can be omitted (.tif always being required). But you don't tell us what happens to the field separators if a field is missing?

You tell us that years 1900 and going forward are valid. Is 10000 a valid year? Is 12345678901234567890 a valid year? Did you really mean that only years 1900-9999 are valid? Or, is there some other specific range of valid years?

You say it is an error if the orgnumber and the imagenumber are out of order, but you give us absolutely no indication of how to tell whether or not any number is a valid orgnumber nor how to tell whether or not any number is a valid imagenumber???

Please give us a clear definition of the requirements for each field including minimum and maximum numbers of characters in the field; a list of valid characters in each field; a clear statement of what the field separators are; and a clear specification of the exact format of a filename without a locationabbreviation, without a year, with out an orgnumber and without an imagenumber field.