Hi,

That should be an easy one:

How to get all of the files names out of the given directory which are in given format?

vendor_source_object_date_filenum.txt

vendor: constant
source: input parameter
object: predefined list ( customer, mail_addredss, email-address, telephone...)

date: YYYYMMDDHHMMSS
filenum: sequence number of fiel (1,2,3...)

Thanks

Problems where the request is to select based on a criteria are best when example input and output is shown. Can you list filenames in the folder, and include the good and bad ones (for selecting)?

... and it depends largely on the shell you are using.

Not sure, what you mean.

Bad one:
bad_file.txt

Good one:
LM_CM_TELEPHONE_20081024114245_1.txt

It is korn shell for sure and ksh93 probably, but not 100% sure.
and her's another question is there way to check what version of shell is using?

Predefined :
dir=$DATA_PATH
vendor='LM' ( constant )
date: any valid date ( for now)

So input is : source

Output is : the list of files to use in FOR loop to process. (LM_CM_TELEPHONE_20081024114245_1.txt)

Yes. If the command below does not return an error, you have ksh93: