Linux定时清理磁盘日志文件——Shell脚本

#!/bin/bash 
# clear the disk in $log_dir when disk is almost full
#   

log_dir='/data_logs_bak/sytLog/'
log_disk='/data_logs_bak'
cd $log_dir

clear_disk(){
  if [[ $#>0 ]] && [[  $1>1 ]]
  then
    echo "clear disk start: $1"
    find $log_dir -type f -name '*log*' -mtime +$1 -exec rm -f {} \;
    echo "clear disk left:" `df -h | grep $log_disk | awk '{print $5}'`
  fi
}

start(){
  for i in 14 13 12 11 10 9 8 7
  do
    outOfDisk=`df -h | grep $log_disk | awk '{if($5 > 80) print $5}' | wc -l`
    if [[ $outOfDisk -eq 0 ]]
    then
      break
    fi
    echo "already out of disk"
    clear_disk $i
    # break
  done 
}

start