check if argument is a valid date in bash shell
bash, linux, shell
Solution
You can check with `date -d "datestring"`
So `date -d "12/31/2012"` is valid, but using hyphens, e.g. `date -d "12-31-2012"`, is not valid for `date`.
You can also use words: `date -d 'yesterday'` or `date -d '1 week ago'` are both valid.
Problem
I am writing a bash shell script in Linux, this program will accept a date (mm-dd-yyyy) as a parameter. I am wondering if there is a simply way to check if the date is valid? is there an operator and I can just use test to check?