nixCraft

How we can use the grep command to search for a particular date range e.g. need to grep the data from 25 April to 3 May.

You can use sed to do that. You can't use a date/time range but you can specify the pattern. Assuming you data looks something like this...

Apr 25 something ... .. ....
Apr 25 sss ww aa....
Apr 26......
.
.
.
May 3 bbb ccc ddd...

Hi

Thanks for ur reply but thr is sm method that i dont know

suppose u want to grep frm 20 to 25th u can do easily using:

grep -n "2[0-5]/April/2008" input_file

but problem is if the month is different

Yep, you can also use grep with regex.

egrep '2[0-5]/(April|May)/2008' logfile this ma work but could u plz elaborate if the date range is 28 april to 02 may

If your data is ordered you might wanna use the sed instead of grep as the regex may get complex depending on your requirements.

1. egrep '(2[8-9]|3[0])/April/2008' server-81-access_log

If we try this command there will be no output.

2. egrep '(2[8-9]|3[0])/April/2008|0[1-2]/May/2008' server-81-access_log

if we try this command there is output but for 1st n 2nd may only not for the april dates.......

You didn't specify the access log format any where in your posts. And the above examples where meant to give you some hint.

date format is 20/April/2008

I don understand y the | operator is not working.

and I m sorry i dont have any idea about sed thats y i m putting stress on grep only

Give me some lines from your log file. And are you sure that your log contains records for April 28, 29 and 30 ?