Script to read log file Post: 302606046

Sponsored Content

Top Forums UNIX for Advanced & Expert Users Script to read log file Post 302606046 by methyl on Friday 9th of March 2012 11:48:06 AM

03-09-2012

Registered User

Quote:

Does the program append to the log every time it is run or is the log created from scratch?
--Yes it updates the log every time it runs

Best approach is to make your own entries to the log from shell. One before the run and one after the run. Stick to the syntax of the logfile itself for the left hand side of the logfile entry, but include your own unique start and end string to your special lines in order to make it possible to use your original "sed" syntax.
I would put your unique search string in the text portion of the message and use only alphanumeric characters. You just need to include the date but in numeric yyyymmddhhmmss format and something to distinguish start from end.
For example

Code:

[INFO 12-03-01:04:10:24] S20120301041024
[INFO 12-03-01:04:10:25] Starting FeedRunner for feed: 200  Product example Items 
[INFO 12-03-01:04:12:40] Error FeedRunner for feed: 200 Product example Items
[INFO 12-03-01:04:20:25] Stopping FeedRunner for feed : 200  Product example Items Feed time taken 231743
[INFO 12-03-01:04:10:26] E20120301041026

methyl

View Public Profile for methyl

Find all posts by methyl

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to read a specific value from a Log file?

Hi, I have a .log file in which it has many values. But i need some specific values. How it can be done using Shell Script. Please explain in detail. Thankx in advance. Sathish D V.

2. Shell Programming and Scripting

Shell script to read multiple log files

Hi all, I have to generate some report from shell script .We have stacktrace log file which generate hourly basis. So now my q is that how this shell script will read all stacktrace log file for particlular day and parse accordingly desire output. Any help or suggestion as i am newbie with...

3. Shell Programming and Scripting

shell script to read a line in gps receiver log file and append that line to new file

Hi, I have gps receiver log..its giving readings .like below Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. GPSD,R=1 $GPGSV,3,1,11,08,16,328,40,11,36,127,00,28,33,283,39,20,11,165,00*71...

4. Solaris

Read zipped log file

If we have a big zipped log file, how can we look for a specific string in this zipped log file without unzipping it? Thanks,

5. Shell Programming and Scripting

Help w/ script to read file and parse log message

Hi, I am working on the script to parsing the specific message like "aaaa" in multiple log files like N1-***,N2-***,N3-***... The script is to find the list of lof files which contains the message "aaaa" and export the list into excel filE. Can anyone give help? Thanks

6. Shell Programming and Scripting

Unix script help to read log file

Hi I have a big log file :08,936 DEBUG HttpConnectionManager.getConnection: config = 11:39:08,936 DEBUG Getting free connection, 11:39:08,989 DEBUG Freeing connection, hostConfig=HostConfiguration 11:39:08,989 DEBUG Notifying no-one, there are no waiting threads 11:39:09,046...

7. Shell Programming and Scripting

Read from Log file in Ksh

I have a log file like.. IMPORT from /dataserver/ftp/bits/mdr/mdr_data_discon.dat OF DEL ..... Number of rows read = 1376 Number of rows skipped = 0 Number of rows inserted = 1374 Number of rows updated = 0 Number of rows rejected = 2 Number of rows...

8. Shell Programming and Scripting

script to constantly read the last 500 new logs in a log file

Hello, I would like to write a bash script that would monitor a log file for a certain number of logs, let's say 500 logs and when it reaches that number to write the last log to another file. For example, I want to watch the /var/adm/messages and everytime, there is 500 new logs that are...

9. Shell Programming and Scripting

HELP: Shell Script to read a Log file line by line and extract Info based on KEYWORDS matching

I have a LOG file which looks like this Import started at: Mon Jul 23 02:13:01 EDT 2012 Initialization completed in 2.146 seconds. -------------------------------------------------------------------------------- -- Import summary for Import item: PolicyInformation...

10. Shell Programming and Scripting

Script to read a log file and run 2nd script if the dates match

# cat /tmp/checkdate.log SQL*Plus: Release 11.2.0.1.0 Production on Mon Sep 17 22:49:00 2012 Copyright (c) 1982, 2009, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production FIRST_TIME NEXT_TIME...

LEARN ABOUT CENTOS

grub-render-label

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)