实现方法一

#!/bin/bashLogs_path="/data/Application/nginx/logs"Pid_path="/data/Application/nginx/nginx.pid"Month=`date +%Y-%m`Date=`date +%Y-%m-%d`Time=`date +%H`WaitTime=$((24*60*60))LogCut(){ cd $Logs_path mkdir -p $Month while true do mv $Logs_path/access.log $Logs_path/$Month/access_$Date.log kill -USR1 `cat ${Pid_path}` done sleep $WaitTime return 0}case $1 instart) LogCut >/dev/null & ;;stop) kill -9 `ps aux | grep LogCut | grep -v grep | awk '{print $2}'`>/dev/null ;;restart) kill -9 `ps aux | grep LogCut | grep -v grep | awk '{print $2}'`>/dev/null LogCut >/dev/null & ;;*) echo "Usage ERROR!Please use "start" or "stop" or "restart"!"esac

实现方法二

试验环境：

# cat /etc/redhat-release Red Hat Enterprise Linux Server release 5.3 (Tikanga)# /opt/nginx/nginx -vnginx version: nginx/1.6.2

代码：

#!/bin/bash# ==============================================================================# chmod u+x /opt/nginx/cut_nginx_log.sh# crontab -e# 0 0 * * * /opt/nginx/cut_nginx_log.sh > /opt/nginx/logs/cut_nginx_log.log 2>&1# ==============================================================================LOGS_PATH="/opt/nginx/logs"ARCHIVE_YEAR=$(date -d "yesterday" "+%Y")ARCHIVE_MONTH=$(date -d "yesterday" "+%m")ARCHIVE_DATE=$(date -d "yesterday" "+%Y%m%d_%H%M%S")if [ -r /opt/nginx/nginx.pid ]; then mkdir -p "${LOGS_PATH}/${ARCHIVE_YEAR}/${ARCHIVE_MONTH}" mv "${LOGS_PATH}/access.log" "${LOGS_PATH}/${ARCHIVE_YEAR}/${ARCHIVE_MONTH}/access_${ARCHIVE_DATE}.log" kill -USR1 $(cat "/opt/nginx/nginx.pid") sleep 1 gzip "${LOGS_PATH}/${ARCHIVE_YEAR}/${ARCHIVE_MONTH}/access_${ARCHIVE_DATE}.log"else echo "Nginx might be down"fi# ==============================================================================# Clean up log files older than 100 days# ==============================================================================# Change HOUSEKEEPING=1 to enable clean upHOUSEKEEPING=0KEEP_DAYS=100if [ $HOUSEKEEPING == 1 ]; then if [ -d "${LOGS_PATH}" ]; then find "${LOGS_PATH}" -type f -name "access_*.log.gz" -mtime +${KEEP_DAYS} -exec rm -f {} \; fifi

参考：
http://wiki.nginx.org/LogRotation