i_basedir=/archlog/cvbackup                            # backup base dir
i_dbnm=SRPDB
KEEP_BACKUP_NUMS=0 # keep KEEP_BACKUP_NUMS of backup
i_cvbackup=$i_basedir/${i_dbnm} # dir of tar for cvbackup to tape
i_log=$i_basedir/scripts/${i_dbnm}_backup.log # operation log

#----------------------------------------------------------#
# 函数名: rm_dir
# 用法 : rm_dir /cvbackup/testdb 2
# 功能 : 保留最新的几个文件
#----------------------------------------------------------#
function rm_dir {
i_dir=$1
i_keep=$2

if [ ! -d $i_dir ]
then
    echo "-->!!ERROR dir $i_cvbackup not exists" >> $i_log
    exit 0
fi

cd $i_dir
echo "-->rm old file of $i_dir (KEEP_BACKUP_NUMS=$i_keep):" >> $i_log
i_cnt=0
for i in `ls -t`
do
{
    if [ $i_cnt -ge $i_keep ]
    then
      echo "-->rm:$i" >> $i_log
      rm -f $i
#rm -rf $i #-r 即可删除目录
    fi
    i_cnt=`expr $i_cnt + 1`
}
done
} # end rm_dir define

# clean old backup file

if [ ! -d $i_cvbackup ]
then
echo "-->!!ERROR dir $i_cvbackup not exists" >> $i_log
exit 0
fi

rm_dir $i_cvbackup $KEEP_BACKUP_NUMS

exit 0

ITPub博客

删除脚本-保留目录下最新的几个文件或目录

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