03-22-2009
Shell script delete log files from folder & subfolders on space usage
Hi,
I am trying to write a shell script to delete logs generate by db when space in the folder reaches 70%. i am getting space values from db, find the files at OS and remove them by using a cron job runs every 5minutes.
I have to keep the latest 5 files at any time, my problem is that log files are generated based on today date folder eg:
2009_03_20, 2009_03_21, 2009_03_22 etc. and
a log file is generate at 30 time interval gap or may generate 2 files per minute depends upon db activity.
how to keep only latest 5 files and remove rest of the files
my script looks like this in linux env.
#! bin/bash
ORACLE_SID="$1"
limit=$2
export $ORACLE_SID
fdir=/tmp/log
export $fdir
export ORACLE_HOME=`grep $ORACLE_SID: /etc/oratab |awk -F: '{print $2}'`
sqlplus -s "/ as sysdba" <<EOF >$fdir/fravalue
@$fdir/arclg_db.sql
EOF
fradest=`cat $fdir/fravalue |awk '{print $1}'`
spaceused=`cat $fdir/fravalue |awk '{print $2}'`
if [ $spaceused -gt $limit ]; then
echo "time to delete archivelogs to free up space"
find $fradest/$ORACLE_SID/archivelog -type f -maxdepth 2 -printf "%T@\t%p\n"| sort -k1,1n |cut -f2-|sed '$d'|rm -rf
else
echo "Not required to delete logs.. lots of space"
fi
please advice me, or suggestions to improve my script.
Thanks
Saha
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rmf(1) General Commands Manual rmf(1)
NAME
rmf - remove folder (only available within the message handling system, mh)
SYNOPSIS
rmf [+folder] [-help] [-[no]interactive]
OPTIONS
Prints a list of the valid options to this command. Asks for confirmation before deleting a folder. By default, rmf deletes a folder and
its messages without asking for confirmation. If you specify the -interactive option, rmf asks if you are sure before deleting the folder.
You are advised to use this option, since when rmf deletes a folder its contents are lost irretrievably.
DESCRIPTION
The rmf command removes all of the messages within the current folder, and then removes the folder itself. If there are any files within
the folder which are not part of MH, they are not removed, and an error message is displayed.
You can specify a folder other than the current folder by using the +folder argument. If you do not specify a folder, and rmf cannot find
the current folder,rmf asks you whether you want to delete +inbox instead.
If the current folder is removed, it makes +inbox current.
Note that the rmf command irreversibly deletes messages that do not have other links, so use it with caution.
If the folder being removed is a sub-folder, the parent folder becomes the new current folder, and rmf tells you that this has happened.
This provides an easy mechanism for selecting a set of messages, operating on the list, then removing the list and returning to the current
folder from which the list was extracted.
Using rmf to delete a read-only folder deletes the private sequence and current message information from the file, without affecting the
folder itself. If you have sub-folders within a folder, you must delete all the sub-folders before you can delete the folder itself.
PROFILE COMPONENTS
Path: To determine the user's Mail directory
EXAMPLES
This example shows how rmf asks for confirmation when the -interactive option is used: % rmf -interactive +test Remove folder "test"? y
FILES
The user profile.
SEE ALSO
rmm(1)
rmf(1)