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Full Discussion: Extract a value from log
Top Forums Shell Programming and Scripting Extract a value from log Post 302533884 by ctsgnb on Saturday 25th of June 2011 08:47:56 AM
Old 06-25-2011
With the same example file as above :

Code:
$ awk -F: '{++x;s+=$NF;print $NF}END{print "average=" s/x}' logfile
0.265
0.857
0.376
average=0.499333

---------- Post updated at 02:47 PM ---------- Previous update was at 02:43 PM ----------

I need to know how your logfile looks like .

Does it only contain lines that ends with a string "request:<value>" ?

If not then please post a representative example of how does your logfile look like (with all the lines, not only those that have the "resquest:<value>", so we can then be more accurate in the line selection before extracting the value and calculating the average
This User Gave Thanks to ctsgnb For This Post:
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LEARN ABOUT LINUX

extractor

EXTRACTOR(1)						  The Canonical Csound Reference					      EXTRACTOR(1)

NAME

       extractor - Extract a section of audio from an audio file. .

DESCRIPTION

       Extract a section of audio, by time or sample, from an existing sound file.

SYNTAX

	   extractor [OPTIONS ... ] infile

INITIALIZATION

       Flags:

       o   -S integer = Start the extract at the given sample number.

       o   -Z integer = End the extract at the given sample number.

       o   - Q integer = Extract given number of samples.

       o   -T fpnum = Start the extract at the given time in seconds.

       o   -E fpnum = End the extract at the given time in seconds.

       o   -D fpnum = Extract given time in seconds.

       o   -v = Verbose mode.

       o   -R = Continually rewrite the header while writing soundfile (WAV/AIFF).

       o   -H integer = Show a "heart-beat" to indicate progress, in style 1, 2 or 3.

       o   -N = Alert call (usually ringing the bell) when finished.

       o   -v = Verbose mode.

       o   -o fname = output file name (default: test.wav)

EXAMPLES

       The default values are

	       extractor -S 0 -Z end-of-file -otest

       For example

	       extractor -S 10234 -D 2.13 in.aiff -o out.wav

       This creates a new sound file taken from sample 10234 and lasting 2.13 seconds.

CREDITS

       Author: John ffitch

       1994

AUTHORS

       Barry Vercoe
       MIT Media Lab

	   Author.

       Dan Ellis
       MIT Media Lab,
		 Cambridge
		 Massachussetts

	   Author.

COPYRIGHT

5.07								    06/23/2009							      EXTRACTOR(1)
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