nginx日志文件自动按每天日期切割和自动定期删除超过七天的shell脚本，当日志增大时，不用再去手动清理和处理脚本。
#!/bin/bash
#日志目录
LOGS_PATH=/usr/local/nginx/logs
YESTERDAY=$(date --date="yesterday" +%Y-%m-%d)
SEVENDAY=$(date --date="7 days ago" +%Y-%m-%d)
rm ${LOGS_PATH}/error-${SEVENDAY}.log
rm ${LOGS_PATH}/access-${SEVENDAY}.log
mv ${LOGS_PATH}/error.log ${LOGS_PATH}/error-${YESTERDAY}.log
mv ${LOGS_PATH}/access.log ${LOGS_PATH}/access-${YESTERDAY}.log
#重启nginx
service nginx restart
#kill -USR1 $(cat /usr/local/nginx/logs/nginx.pid)
#/usr/local/nginx/sbin/nginx -s reload
