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Top Forums Shell Programming and Scripting Reading and writing in same file Post 302697379 by kmajumder on Thursday 6th of September 2012 04:43:12 PM
Old 09-06-2012
Sorry for the confusion

Let me give you a complete example what I am trying to achieve.

1. Below is the log file structure where I need 2,5 and 14th column of the logs after grepping through the linkId=1ddoic.

Log file structure:-

abc.com 20120829001415 127.0.0.1 app none11111 sas 0 0 N clk Mozilla/5.0 id=82c6a15ca06b2372c3b3ec2133fc8b14 referrer=google.com linkId=1ddoic

abc.com 20120829001416 127.0.0.1 dyn UD3BSAp8appncXlZ UD3BSAp8app4xHbz 0 0 N page Mozilla/5.0 id=82c6a15ca06b2372c3b3ec2133fc8b14 segments=

2. Now for the 1st log you can see I have invalid(none11111) 5th column. So I have to look for the actual 5th column value. 'id' column will help you to find that. So you have to run another grep based on the 'id' value so that you can find the actual 5th column in the same log file.
3. If you see the second log it has the exact matching 'id' value. So what I have to do I have to take the 5th column(UD3BSAp8appncXlZ) from the second log instead of the invalid one(none11111).

Output:-

20120829001415, UD3BSAp8appncXlZ, linkId=1ddoic

Note:- I have bunch of log files where I have to perform the above procedure. But I have to come up with a single file as output after grepping through all the log files.
It has a format like abc-2012-10-01_00000,abc-2012-10-01_00001.... etc.



Hope this time it makes clear.Smilie
Thanks for looking into it.

Last edited by kmajumder; 09-06-2012 at 05:48 PM..
 

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cmannotifyd(8)						     CMAN Notification Daemon						    cmannotifyd(8)

NAME
cmannotifyd - CMAN Notification Daemon SYNOPSIS
cmannotifyd [-f] [-d] DESCRIPTION
The cmannotifyd daemon talks to CMAN and provides a mechanism to notify external entities about cluster changes. CMAN dispatches 3 kind of notifications: - CMAN_REASON_TRY_SHUTDOWN when cman requests to all clients if it is allowed to shutdown. - CMAN_REASON_STATECHANGE when cman detects a node joining or leaving the cluster. - CMAN_REASON_CONFIG_UPDATE when a configuration change event has been detected/requested. These notifications are then dispatched to the shell script cman_notify in the environment variable CMAN_NOTIFICATION. cman_notify will then execute all the scripts in the configured notification directory (default: /etc/cluster/cman-notify.d) passing a very minimal set of envvars including, of course, the CMAN_NOTIFICATION= type. The execution order is set by the filename as shown by "LC_ALL=C ls -las". cmannotifyd logs are stored in the default log file (/var/log/cluster/cmannotifyd.log). cman_notify logs are stored in the default log file (/var/log/cluster/cman_notify.log). By default the output from the scripts executed by cman_notify is redirected to /dev/null. Users can either set CMAN_NOTIFICATION_DEBUG=1 in their environment or set proper debug configura- tion in cluster.conf to redirect scripts output to the cman_notify log file. NOTES
cmannotifyd does not block on cman_notify nor check the exit status of the script. Notifications are dispatched in the same order as they arrive, one by one. CMAN_REASON_TRY_SHUTDOWN is passed to scripts for information only, they can not influence cman's decsion about whether or not to shut down. CMAN_REASON_STATECHANGE also implies CMAN_NOTIFICATION_QUORUM exported in the environment. CMAN_NOTIFICATION_QUORUM will be set to 1 (when the node is part of a quorate cluster) or 0 (otherwise). A template for cman_notify scripts can be found in the doc/ directory. OPTIONS
-f Run in the foreground (do not fork / daemonize). -d Enable debug output. November 2008 cmannotifyd(8)
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