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AWK / tail Issue

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# 1  
Old 01-16-2011
Tools AWK / tail Issue
Hello,

I am using a tail command to fetch the line before last in a log file.

the two last lines are as followed:
Code:
11-01-16 11:55:45.174 | CClientObject::InitTraceLevelInCache Starting 
CClientObject::InitTraceLevelInCache End

I am doing a awk statement to gather only the numeric values:
Code:
tmp_tail=`tail -2 "$trace" | awk '{print $1$2}' | cut -f,1 -d '.' | tr -d '-' | tr -d ':'`

output:
Code:
110116115545
CClientObjectInitTraceLevelInCacheEnd

I want only the output for the line before last --> i.e. 110116115545

Please assist.
Last edited by Scott; 01-16-2011 at 09:05 AM.. Reason: Please use code tags
# 2  
Old 01-16-2011
As you seem to be having fun with pipes, what harm would another one do?

Code:
tmp_tail=$(tail -2 ...... | head -1)

Some sed (which I'm sure could be simplified):
Code:
$ sed -n '${g;s/\..*//;s/[^0-9]//g;p;};h' file
110116115545

These 2 Users Gave Thanks to Scott For This Post:
LiorAmitai m.d.ludwig
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