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Full Discussion: Help with awk script
Top Forums UNIX for Dummies Questions & Answers Help with awk script Post 302907231 by nybbles2bytes on Thursday 26th of June 2014 08:19:42 PM
Old 06-26-2014
Fair enough. I think I have learned enough to get exactly what I want now. This seems to set the variables exactly as they should be. Let me know if you see anything wrong.

Test output included (print statement is purely test data output) which also includes the input lines. I have also removed anything but the awk code for the sake of simplicity.

Code:
CODE:
sudo tail /var/log/httpd/rewrite.log| awk \
  -v RefDateA="`date -d 'now-47 minutes'`" \
  -v RefDateB="`date -d 'now-47 minutes' '+%s'`" \
  '{ 
    "echo "$4" "$5"|tr -d \"[]\"|sed -e \"s#/#-#g\" -e \"s/:/ /1\"|date \"+%s\""|getline LogDate;
    print "R1:",RefDateA, "  R2:",RefDateB, "  L:",LogDate, "  L:",LogDate, "  Line:",$0;
  }'

OUTPUT:
R1: Thu Jun 26 12:54:17 PDT 2014   R2: 1403812457   L: 1403815277   L: 1403815277   Line: 111.111.111.111 - - [26/Jun/2014:13:41:11 --0700] [www.domain.com/sid#7f98217071e0][rid#7f9821b730e8/initial] (1) [perdir /var/www/html/cms/] pass through /var/www/html/cms/
R1: Thu Jun 26 12:54:17 PDT 2014   R2: 1403812457   L: 1403815277   L: 1403815277   Line: 111.111.111.111 - - [26/Jun/2014:13:41:11 --0700] [www.domain.com/sid#7f98217071e0][rid#7f9821b4d288/subreq] (1) [perdir /var/www/html/cms/] pass through /var/www/html/cms/index.php
R1: Thu Jun 26 12:54:17 PDT 2014   R2: 1403812457   L: 1403815277   L: 1403815277   Line: 22.33.444.5 - - [26/Jun/2014:13:41:11 --0700] [www.domain2.com/sid#7f98217071e0][rid#7f9821b5d9b8/initial] (2) [perdir /var/www/html/cms/] rewrite 'shop/configure/tivo-roamio' -> 'index.php'
R1: Thu Jun 26 12:54:17 PDT 2014   R2: 1403812457   L: 1403815277   L: 1403815277   Line: 22.33.444.5 - - [26/Jun/2014:13:41:11 --0700] [www.domain2.com/sid#7f98217071e0][rid#7f9821b5d9b8/initial] (2) [perdir /var/www/html/cms/] strip document_root prefix: /var/www/html/cms/index.php -> /index.php
R1: Thu Jun 26 12:54:17 PDT 2014   R2: 1403812457   L: 1403815277   L: 1403815277   Line: 22.33.444.5 - - [26/Jun/2014:13:41:11 --0700] [www.domain2.com/sid#7f98217071e0][rid#7f9821b5d9b8/initial] (1) [perdir /var/www/html/cms/] internal redirect with /index.php [INTERNAL REDIRECT]
R1: Thu Jun 26 12:54:17 PDT 2014   R2: 1403812457   L: 1403815277   L: 1403815277   Line: 22.33.444.5 - - [26/Jun/2014:13:41:11 --0700] [www.domain2.com/sid#7f98217071e0][rid#7f9822b65ab8/initial/redir#1] (1) [perdir /var/www/html/cms/] pass through /var/www/html/cms/index.php
R1: Thu Jun 26 12:54:17 PDT 2014   R2: 1403812457   L: 1403815277   L: 1403815277   Line: 111.222.333.444 - - [26/Jun/2014:13:41:12 --0700] [www.domain.com/sid#7f98217071e0][rid#7f9821b5b9a8/initial] (1) [perdir /var/www/html/cms/] pass through /var/www/html/cms/
R1: Thu Jun 26 12:54:17 PDT 2014   R2: 1403812457   L: 1403815277   L: 1403815277   Line: 111.222.333.444 - - [26/Jun/2014:13:41:12 --0700] [www.domain.com/sid#7f98217071e0][rid#7f9821b730e8/subreq] (1) [perdir /var/www/html/cms/] pass through /var/www/html/cms/index.php
R1: Thu Jun 26 12:54:17 PDT 2014   R2: 1403812457   L: 1403815277   L: 1403815277   Line: 111.111.111.111 - - [26/Jun/2014:13:41:16 --0700] [www.domain.com/sid#7f98217071e0][rid#7f9821b5da38/initial] (1) [perdir /var/www/html/cms/] pass through /var/www/html/cms/
R1: Thu Jun 26 12:54:17 PDT 2014   R2: 1403812457   L: 1403815277   L: 1403815277   Line: 111.111.111.111 - - [26/Jun/2014:13:41:16 --0700] [www.domain.com/sid#7f98217071e0][rid#7f9821b730e8/subreq] (1) [perdir /var/www/html/cms/] pass through /var/www/html/cms/index.php

---------- Post updated at 07:19 PM ---------- Previous update was at 03:56 PM ----------

I saw what you meant by not piping to date so I've modified this to work the way date wants to work. So here's the code, as you can see I've pulled some functionality into th awk and got rid of the need for grep for the regex.

What I don't know how to do is get rid of using "date" through the loop as I am sure it's making it a very slow script by having to call it that way. One way I suppose would be to split the datetimes up and reorder them by YYYYMMDDHHMMSS and then just do a string compare but I'm not really sure how to do that in awk.

And of course any clues you have on whatever else might make it slow that we could change since I don't really know the ins and outs of awk.

Called with: sudo cat /var/log/httpd/rewrite.log|./monitor-rewrites.awk -v LookBack="10 hours"

Code:
#!/bin/awk -f

BEGIN{
  #
  # LookBack should be something like "1 hour" or "1 day" and is set on the command line with
  # -v LookBack='1 hour'. Best to make it the same and the crontab set frequency for calling
  # this script.
  #
        "date -d \"-"LookBack"\" \"+%s\""|getline RefDate;
  close("date -d \"-"LookBack"\" \"+%s\"");
  print "BEGIN";
}
{
        "date -d \"$(echo "$4"|tr -d \"[]\"|sed -e \"s#/#-#g\" -e \"s/:/ /1\")\" \"+%s\""|getline LogDate;
  close("date -d \"$(echo "$4"|tr -d \"[]\"|sed -e \"s#/#-#g\" -e \"s/:/ /1\")\" \"+%s\"");
  #
  #  Uncomment the following for testing
  # print "R:",RefDate, "  L:",LogDate, "  Diff:",(LogDate - RefDate), "  Line: "$0;
  #
  if (RefDate < LogDate) {
    if (/rewrite +.?(assets\/.+.? +-> +.?sites\/default\/files\/|sites\/default\/files\/.+.? +-> +.?assets\/)./) {
      print $4, $5, $10, $11, $12, $13;
    }
  }
}
END {
  print "END";
}

 

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