linux file exists

Using a shell to determine whether a device node exists, such as inserting a 4G Modem Sierra module into a Linux system, generates a series of TTY devices, typically with a command to send and receive at. For example, a device node is a/DEV/TTYUSB2

1 files and directories of Linux Modern operating systems introduce files for long-term storage of information that can be stored independently of the process, and the logical units of the files that create information as processes can be used

-B file file exists and is block special-c file file exists and is character sp ecial-d file file exists and is a directory-e file file Exists-f file File exists and is a regular file-g file file exists and is Set-group-id-g FIL E file

Linux Programming Study Notes-file management system, linux Study Notes This article is organized from the networkFile System Management in Linux 1. Overview of VFS File System Linux uses VFS to manage the file system, and one of the linux design

Turn from: http://blog.csdn.net/adcxf/article/details/6386901 Everyone has a different approach to determining whether a file exists. I usually take two approaches: open and access;There are similarities and differences between the two methods, and

http://blog.csdn.net/zjl_1026_2001/article/details/6587320 Everyone has a different approach to determining whether a file exists. I usually take two approaches: open and access;There are similarities and differences between the two methods, and

Click Back to learn the path of the Linux command line and shell script1.3-linux File SystemA file system is an organization method that files reside on storage devices such as disks. Linux systems can support a variety of currently popular file

HTTP://WWW.IBM.COM/DEVELOPERWORKS/CN/LINUX/L-LSM/PART1/1. Related background: Why and whatIn recent years, Linux system has been widely concerned and applied by computer industry because of its excellent performance and stability, the flexibility

I and Linux-general Linux technology-Linux technology and application information. The following is a detailed description. Translation: linky_fan @ www.linuxfans.org Making the distribution, Part 1 Birth of the Gentoo Linux Me and Linux Nowadays,

Conditional Logic on Files# Determine if the file exists and the file type-Afileexists. #文件存在-BfileExists and is a block specialfile. #文件存在, and it's a block device.-Cfileexists and is a character specialfile. # #文件存在, and is a character