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Shell Programming and Scripting

Script to grep logs for Errors

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# 1  
Old 02-24-2014
Script to grep logs for Errors
Hi Guys,

I want to write a script which can grep the logs (server.log) from a file for Error String and output to a other file.

Problems:

How to know about the errors only between the current restart and not in previous as server.log has earlier restarts also?

thanks for the help! Much appreciated if you can help quckly
# 2  
Old 02-24-2014
Check if any timestamp is added to your log
# 3  
Old 02-24-2014
The timestamps are like this:

2014-02-24 06:51:48,628
# 4  
Old 02-24-2014
Code:
awk -v dt=$(date +%Y'-'%m'-'%d) ' dt,0 { if(/Error/) print } ' Logfile

# 5  
Old 02-24-2014
so if server has stopped and started with these strings;

Stop : stopped
Start : started

These two have to be latest(as the server has restarted previously also) and grep the lines between these strings.
# 6  
Old 02-24-2014
Try:

Code:
awk '/Start : started/{L=1} /Error/{E[L++]=$0} END{for(i=1;i<L;i++) print E[i]}' logfile

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