介绍: Webmin is a web-based interface for system administration for Unix. Using any modern web browser, you can setup user accounts, Apache, DNS, file sharing and much more. Webmin removes the need to manually edit Unix configuration files like/etc/pas…
一.I/O重定向 标准输入,标准输出,标准错误 file descriptors (FD, 文件描述符或Process I/O channels); 进程使用文件描述符来管理打开的文件 [root@linux ~]# ls /proc/$$/fd , , and , known as standard input, standard output, and standard error 输出重定向(覆盖,追加) 正确输出:1> 1>> 等价于 > >> 错误输出:2&g…
一.用户管理 (一).用户和组的基本概念 Users and groups:. Every process (running program) on the system runs as a particular user. 系统上的每个进程(运行的程序)都是作为特定用户运行的. Every file is owned by a particular user. 每个文件是由一个特定的用户拥有. Access to files and directories are restricted by…