bash - question about grepping a specific time period
 

Hello,

I am fairly new to bash and have a question how I can accomplish the following:
I have to grep in a logfile for a specific time period and print it out.
For example: someone wants to get all results from a logfile from 21:05-21:10

How do print/grep that period?
An example begin of a log entry: 2010-08-04 00:00:01,774 ERROR

Thanks for any help.

Hi,

In general: grep "2010-08-04 00:00:01" logfile

If you want this range: 21:05-21:10 -> grep "21:0[5-9]" logfile
The above example looks for the range 21:05:00 -> 21:09:59. The [5-9] part tells grep to look for everything from 5 t 9 (including both 5 and 9).

Hope this helps.

Hello,

Thanks that did the trick for me, I was using a loop but your example is lesser code and works perfectly :)

Thanks!

Michiel

You're welcome :)

If i want this range: 21:05 - 21:23 - how to grep?

Write a small program in awk/perl/php/whatever