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Full Discussion: Extract a value from log
Top Forums Shell Programming and Scripting Extract a value from log Post 302533882 by dreamgirl314 on Saturday 25th of June 2011 08:40:03 AM
Old 06-25-2011
Hi,

The input is a nginx log file with many requests of this syntax:

130.37.129.78 - - [25/Jun/2011:12:55:10 +0000] "GET /ganglia/graph.php?m=load_one&z=small&c=cluster1&h=xen02.das3.cs.vu.nl&l=e2ecff&v=0.00&x=0.32&n=0&r=hour&su=1 &st=1309006507 HTTP/1.0" 200 7085 "http://130.37.197.12/ganglia/index.php" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:5.0) Gecko/20100101 Firefox/5.0" request:0.252

I am parsing this log file line by line and extracting the request: value from each line and computing their average. Could you help me as to how to extract the value after the "request:" string from each line.
 

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GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME
grub-render-label - generate a .disk_label for Apple Macs. SYNOPSIS
grub-render-label [OPTION...] [OPTIONS] DESCRIPTION
Render Apple .disk_label. -b, --bgcolor=COLOR use COLOR for background -c, --color=COLOR use COLOR for text -f, --font=FILE use FILE as font (PF2). -i, --input=FILE read text from FILE. -o, --output=FILE set output filename. Default is STDOUT -t, --text=STRING set the label to render -v, --verbose print verbose messages. -?, --help give this help list --usage give a short usage message -V, --version print program version Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options. REPORTING BUGS
Report bugs to <bug-grub@gnu.org>. SEE ALSO
The full documentation for grub-render-label is maintained as a Texinfo manual. If the info and grub-render-label programs are properly installed at your site, the command info grub-render-label should give you access to the complete manual. grub-render-label (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-RENDER-LABEL(1)
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