前言：打开文件是Linux系统中最基本的操作之一，open函数可以实现打开文件的功能。 下面，将为大家介绍open函数打通上层到底层硬件的详细过程。

Did you know that Linux makes it easy to create and use hidden files, which means you can easily tuck important documents away from plain sight? Here's how to manage those files.

接着， open 函数会调用文件系统的VFS（Virtual File System）层，VFS层是Linux文件系统的核心部分，其作用是将文件系统的各种实现细节隐藏起来，为上层应用程序提供一个统一的接口。

Not happy with your Linux distro's default file manager? Stop struggling and try something different. Considering that these are all free, what do you have to lose?

If you're tired of having to jump through hoops to open files with sudo privileges in the GNOME File Manager, Jack Wallen has just the trick you need.

If you would like to rename your files using Linux commands instead, open your command line interface and navigate to the directory containing the file that you wish to rename.

There are a number of Linux commands that will display file system types along with the file system names, mount points and such. Some will also display sizes and available disk space. The df ...