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文章 2017-11-15 来自：开发者社区

centos知识点巩固

1.特殊权限 SUID,SGID,sticky-bit 设置GUID可以用chmod u+s /usr/bin/myapp 设置SGID可以用chmod g+s /home/groupspace 设置Sticky-bit可以用chmod o+t /home/share/temp就是典型的sticky-bit 如果要恢复那直接把加号改成减号就可以了。 2.安排cron任务 crontab命令用于安....

文章 2017-11-15 来自：开发者社区

centos知识点巩固

1.硬件管理守护进程apmd apmd（Advanced Power Management）是高级电源管理。传统的电源管理标准，对于笔记本电脑比较有用，可以了解系统的电池电量信息。并将相关信息通过 syslogd 写入日志。也可以用来在电源不足时关机。 acpid acpid（Advanced Configuration and Power Interface）是为替代传统的 APM 电源管理....

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