Shell Programming and Scripting

Hi,

I have one problem. I want to identify all those files which are named according to the format <name>_<date>. I have tried using awk and grep in bash but i m not able to get it correct.

Can someone please help? It's urgent !!

Depends on the format of the date.
You should be more precise about the format of the files

yeah ..sorry for that..suppose i have abc_04Jul2009.txt kind of files apart from abc.txt files in my directory.

Now, i want to display those files which are named according to <name>_<date> format..with the date format given above..

Please I need help on this.

I have tried this:

ls | grep "_" | grep "`date +%d%B%Y`"

But this gives only for today's date. I want for all other dates also.

You can try

Code:

ls | grep '_[0-3][0-9][A-Z][a-z][a-z][1-2][0-9][0-9][0-9].'

But it doesn't verify if the alpha characters correspond really to a month but a 3 char string with first letter uppercase.

yeah..thats the exact problem..i have tried regular expressions for that also but couldn't figure it out..one of my friends said to use awk for this..but unable to figure it out..

another way could be to loop in the files, extract the substring corresponding to the position of the date, then test th evalidity with somthing like date -d "...".
Is the string before date always of the same length ?

ls | grep [a-z]*_[0-9][0-9][A-Z][a-z]*[0-9][0-9][0-9][0-9].[a-z]*