系统运行长时间后会产生大量log日志文件 清空命令 ~~~ cat /dev/null > /var/log/httpd/error_log cat /dev/null > 这里是文件路径 ~~~ cat /dev/null > /www/wdlinux/httpd-2.4.28/logs/access_log cat /dev/null > /www/wdlinux/httpd-2.4.28/logs/error_log cat /dev/null > /www/wdlinux/nginx-1.12.2/logs/access.log cat /dev/null > /www/wdlinux/nginx-1.12.2/logs/error.log cat /dev/null > /www/wdlinux/httpd-2.4.18/logs/access_log cat /dev/null > /www/wdlinux/httpd-2.4.18/logs/error_log cat /dev/null > /www/wdlinux/nginx-1.8.1/logs/access.log cat /dev/null > /www/wdlinux/nginx-1.8.1/logs/error.log