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Old 06-27-2013, 05:03 PM   #1
andre3050
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Registered: Jun 2013
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shell script to strip data from a log file


Hey guys

My first time on this Linux forum. I'm not really new to Linux but unfortunately not had much pratcise.

Is there a script that I can taylor to pick out certain data from a file and write it to a new file? For example, copy any occurrence of a certain error or keyword to a certain keyword then dump it into a file?

You help would be much appreciated-

Thanks
Andre
 
Old 06-27-2013, 07:52 PM   #2
grail
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Well without examples, my first thought would be to redirect grep into a file:
Code:
grep 'what your looking for' /path/to/log_file > file_containing_found_data
 
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Old 06-27-2013, 10:15 PM   #3
buttugly
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I'm not exactly sure what your trying accomplish, towards that end, try this and see if it gets you closer.

open a terminal
cd into a directory(folder)that you can test in
type dmesg | grep ACPI >acpi.txt

What has happened is we have scanned the dmesg log for any ACPI lines and written them into acpi.txt.

From there you can open with your favorite editor or just type cat acpi.txt to see whats in there.

There are lots of tools, awk, sed come to mind that may do more of what you need.

If you could explain in a bit more detail please?
 
Old 06-27-2013, 10:44 PM   #4
szboardstretcher
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Location: Detroit, MI
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You can find this information everywhere on the internet and this site. Grail has already pointed out a great way to do this,.. if that doesn't suit your needs, it will really benefit you to check out the bash scripting tutorials, and searching LQ for similar questions!

Good luck.
 
Old 06-28-2013, 02:19 AM   #6
andre3050
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Thanks for the tips.

I'm trying to pick out email addresses from the mail server log that have delivery failures like ones hat have been bounced by the remote server so that I see reasons.

Thanks
Andre
 
Old 06-28-2013, 02:28 AM   #7
unSpawn
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In that case maybe don't go for re-inventing the wheel but save yourself time and effort and instead have a look at the reporting tools that come with your MTA, any reporting add-ons or Logwatch?
 
Old 06-28-2013, 02:36 AM   #8
andre3050
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I don't know. The mail server is Linux/Postfix, but will check
 
  


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