I'm writing a bash script to process a CSV file of billing records. I need to check the last field of each record to make sure it is a numeric value, not a alpha character. I can do all kinds of things to work with the specific field; I can even output the field to a seperate file. I just can't figure out how to test for a numeric value. I tried expr, but could not get that to work; it showed an error fo all of my tests. And awk just passed over the error I planted in the test. According to the book I'm using as a guide, expr should do it. Maybe I've got the syntax wrong. I've tried: expr $Value + 1 It always gets a syntax error. It is supposed to get an error like "expr: non-numeric argument" when $Value is non-numeric, but instead it always gets the error even if it is numeric. Any suggestions?
Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
