每天凌晨执行，注意：脚本会重载nginx服务

0 0 * * * /bin/bash /root/lnmp1.3/tools/cut_nginx_logs.sh

脚本内容、可修改参数：
log_files_path：日志文件目录
log_files_dir：保存日志文件的目录
log_files_name：日志文件名称，不包含.log
nginx_sbin：nginx 执行文件路径
save_days：保留多少天以内的日志文件

#!/bin/bash
#function:cut nginx log files for lnmp v0.5 and v0.6
#author: http://lnmp.org

#set the path to nginx log files
log_files_path="/home/wwwroot/nginx_logs/"
#log_files_dir=${log_files_path}$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")
log_files_dir=$log_files_path
#set nginx log files you want to cut
log_files_name="www"
#set the path to nginx.
nginx_sbin="/usr/local/nginx/sbin/nginx"
#Set how long you want to save
save_days=365

############################################
#Please do not modify the following script #
############################################
mkdir -p $log_files_dir

log_files_num=${#log_files_name[@]}

#cut nginx log files
for((i=0;i<$log_files_num;i++));do
 mv ${log_files_path}${log_files_name[i]}.log ${log_files_dir}/${log_files_name[i]}_$(date -d "yesterday" +"%Y%m%d").log
# mv ${log_files_path}${log_files_name[i]}.log ${log_files_name[i]}_$(date -d "yesterday" +"%Y%m%d").log
done

#delete 30 days ago nginx log files
find $log_files_path -mtime +$save_days -exec rm -rf {} \; 

$nginx_sbin -s reload

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