I want to write a function which would validate the first line of mine file.
The first line of line is the date format. I can cut it off using head command and then I want to validate the header. The header should be in date format
ddmmyyyy. I dont want any database intervetion.

Can experts help me in this regard.

Regards
Varun

posting a sample imput AND a desired output would be a good start.

I have a file like

12072004
111
222
333
444
555
5

This is mine file. The first line is the date in format ddmmyyyyy. Then come the Records and last line is no of records in the file.

I want to cut the header and verify that it is in desired date format.
(ddmmyyyy)

Experts plz help

I've just done something similar recently. I wrote the regex below which will validate a date in format ddmmccyy. The only probelm with it is that it assumes February always has 29 days.