Dears, I am working on a batch that processes file with name containing date prefix eg., 20101222_file.dat. The logic is to process files in order. Eg., 20101225 must be processed only after 20101222. Ok first glance it looked simple, it use a variable to check this date value as number and just 1 to it in every iteration, yes functionally it works fine. But there is a unnecessary folder check for files like 20101235 the reason is that I just used it as a number, so it just increments without realizing it is not a valid date, no harm but it is unnecessary. So I need to validate whether it is valid date J I wrote a small script to do it as below.
But if there a single function to do this already, please let me know. Or any better suggestions?
Regards, Narayanan K
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Last edited by Franklin52; 12-22-2010 at 07:39 AM..
Hi All,
I've to validate a date input for the format YYYYMMDD. The input should be of 8 digits with only numeric values.
I tried the following
echo $1 | grep '^\{8}$/p'
if
then
echo "Valid"
else
echo "invalid"
I get the error,
grep: RE error 16: Bad number.
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