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Full Discussion: Help with a rotate log script
Top Forums Shell Programming and Scripting Help with a rotate log script Post 302697247 by newbie_01 on Thursday 6th of September 2012 09:49:36 AM
Old 09-06-2012
Help with a rotate log script
Hi all,

Am trying to write my own log rotate script. Curremtly, what I have is as below:

Code:
 
#!/bin/ksh
file_to_rotate=${1}
x=${2}
while [[ ${x} -ge 1 ]]
do
   let curr=${x}
   let prev=${x}-1
   if [[ $x -eq 1 ]] ; then
      #echo "cp -p ${file_to_rotate} ${file_to_rotate}.${curr}"
      cp -p ${file_to_rotate} ${file_to_rotate}.${curr}
      let x=${x}-1
   else
      if [[ ! -f ${file_to_rotate}.${prev} ]] ; then
         let x=${x}-1
      else
         #echo "cp -p ${file_to_rotate}.${prev} ${file_to_rotate}.${curr}"
         cp -p ${file_to_rotate}.${prev} ${file_to_rotate}.${curr}
         let x=${x}-1
      fi
   fi
done

I run the script as ./x.ksh x.log 10 and it works like how I want it to. Unfortunately, sometimes, I have some files missing like and my number of rotated log files turns out as below:

Code:
[tmp]$ ls -ltr
total 36
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.9
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.8
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.7
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.6
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.2
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.10
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.1
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log
-rwxr--r-- 1 oracle oinstall 549 Sep  7 01:38 x.ksh


Note that I have x.log.5, x.log.4, x.log.3 missing. Can anyone suggest how I can include some sort of re-ordering/renaming loop so that after I run the rotate script, I will end up with the rotated logs renamed as below:

Code:
 
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.9
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.8
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.7
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.6
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.2
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.10
-rw-r--r-- 1 oracle oinstall 198 Sep  7 00:38 x.log.1

x.log.10 should be x.log.7
x.log.9 should be x.log.6
x.log.8 should be x.log.5
x.log.7 should be x.log.4
x.log.6 should be x.log.3
x.log.2 should be x.log.2
x.log.1 should be x.log.1

Help much appreciated. Thanks in advance.
 

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svcdumplog

svcdumplog(1m)															    svcdumplog(1m)

NAME

       svcdumplog - Prints contents of a binary serviceability log file

SYNOPSIS

       svcdumplog [-s num_of_entries] logfile

OPTIONS

       The -s flag tells svcdumplog to skip the first num_of_entries log entries before printing, where num_of_entries is a number.

DESCRIPTION

       The svcdumplog program will print the contents of a binary log file.

       DCE  components	log  important	information about their activities and state via the DCE serviceability interface. The log messages can be
       routed as desired via the dcecp log object. The messages can also be written in either binary or in text format (information about specify-
       ing  message  format can be found in svcroute(5)). When binary format has been specified for a component's messages, each log entry will be
       written as a binary record of data defined (in dce/svclog.h) as the contents of the serviceability prolog structure. The svcdumplog utility
       will print the contents of such a binary log file as readable text.

RELATED INFORMATION

       dce_svc_log_get(3), dce_svc_log_close(3), dce_svc_log_open(3), dce_svc_log_rewind(3), svcroute(5), log(1m)

       Books: OSF DCE Porting and Testing Guide, OSF DCE Application Development Guide

																    svcdumplog(1m)
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