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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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LEARN ABOUT FREEBSD

iprop-log

IPROP-LOG(8)						    BSD System Manager's Manual 					      IPROP-LOG(8)

NAME

     iprop-log -- maintain the iprop log file

SYNOPSIS

     iprop-log [--version] [-h | --help] command

     iprop-log truncate [-c file | --config-file=file] [-r string | --realm=string] [-h | --help]

     iprop-log dump [-c file | --config-file=file] [-r string | --realm=string] [-h | --help]

     iprop-log replay [--start-version=version-number] [--end-version=version-number] [-c file | --config-file=file] [-r string | --realm=string]
	       [-h | --help]

DESCRIPTION

     Supported options:

     --version

     -h, --help

     command can be one of the following:

     truncate

	       -c file, --config-file=file
		       configuration file

	       -r string, --realm=string
		       realm

	       Truncates the log. Sets the new logs version number for the to the last entry of the old log.  If the log is truncted by emptying
	       the file, the log will start over at the first version (0).

     dump

	       -c file, --config-file=file
		       configuration file

	       -r string, --realm=string
		       realm

	       Print out all entries in the log to standard output.

     replay

	       --start-version=version-number
		       start replay with this version

	       --end-version=version-number
		       end replay with this version

	       -c file, --config-file=file
		       configuration file

	       -r string, --realm=string
		       realm

	       Replay the changes from specified entries (or all if none is specified) in the transaction log to the database.

     last-version

	       -c file, --config-file=file
		       configuration file

	       -r string, --realm=string
		       realm

	       prints the version of the last log entry.

SEE ALSO

     iprop(8)

Heimdal 							 February 18, 2007							   Heimdal
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