Last reprinted an article "PowerShell view open File default Application", its bright spot is to invoke the Windows API, the idea is very unique, but may not be practical. Later @j in the original comment, said Assoc + ftype more convenient. So Assoc and ftype is a god horse thing, I briefly describe.
Assoc and Ftype are two commands on the Windows system cmd.exe:
The former Assoc can return a
People who know a little about C programming know that text files and binaries are stored in 0,1 on a computer, so how are the two different? For programmers, text files and binaries are statements that indicate how you should open the file (text/binary), what functions to read and write to the file (read-write function), and how to read the end of the
1. Open () syntax Open (file[, mode[, buffering[, encoding[, errors[, newline[, Closefd=true]]] []] The Open function has many parameters, often file,mode and encoding file location, which requires quotes mode
r,r+,w,w+,a,a+ effect
R
Read-only
Do not create
r+
Write
W
New Write-only
Both will empty the file
w+
New Read/write
A
Attach write mode open, unreadable
A +
Additional read and write mode open
The
Reprint please indicate source: http://blog.csdn.net/cywosp/article/details/389652391. Overviewin the Linux system, everything can be considered as a file, and the file can be divided into: Ordinary files, directory files, linked files and device files. File descriptor is the index created by the kernel in order to efficiently manage files that have been opened,
I. What is a documentBefore we tell the file operation, we need to know what the file is. You may feel ridiculous to see this, because a file is the simplest concept for a computer person, such as a text is a file, a work document is a file, and so on. But in Linux, the conc
What is SWF file, swf file is Flash animation file, then the SWF file with what open? In fact, you need to open the SwF file method is very much, the following editor introduces you sev
One, the file descriptorFor Linux, all operations on a device or file are performed through a file descriptor. When a file is opened or created, the kernel returns a file descriptor (non-negative integer) to the process. Subsequent operations on the
fso| Tutorial
How to open a file using the FSO -fso Use tutorial 4
After understanding the file copy, delete, move, and rename, let's learn how to access the data in the file. The TextStream object that must be used for file access is a FileSystemObject child object. The m
The relationship between file descriptors and open files in Linux
Guide
The kernel (kernel) accesses files using file descriptors (descriptor). The file descriptor is a non-negative integer. When you open an existing
This article describes the open and OS basic usage in IO. This time with a game landing basic interface to do introduction, to introduce.There are many ways to implement storage. For example, the dictionary and list, but the dictionary, the list is temporary, play a web game once or can, if it is a repeated use of a software, it is obviously inappropriate, more familiar with the media has the "file", for th
First to popularize a few knowledge:
Everything under Linux is files, including input, network connections, sockets, pipelines, etc.
The most relevant file opening number is the file descriptor (some people like to call the file identifier, the English file descriptor), the essence of the number of
First, file descriptor
For Linux, all operations on a device or file are performed through a file descriptor. When you open or create a file, the kernel returns a file descriptor (Non-negative integer) to the process. Subsequent
The fopen () function is used to open a file in PHP.The first parameter of this function contains the name of the file you want to open, and the second parameter sets which mode is used to open the file:
Copy Code code as fol
How does the php file open? PHP full Jane hypertext Preprocessor Chinese name is a hypertext preprocessor, it and C,c++,java,perl can do some algorithmic operations, while PHP is mainly used in Web application development, PHP entry threshold is lower, Easy to learn, widely used, mainly applicable to the field of web development. PHP's file suffix is named PHP.
For the WIN10 system under how to open the PDF file and modify this problem, or need to operate after the answer, give detailed procedures. Speaking of how to open the PDF under the WIN10 system and modify the problem, let's look at how the PDF file is opened under the WIN10 system, which is how to read the PDF
Original address: http://blog.csdn.net/ztf312/article/details/47259805The first step to exclude file open mode error:R Read-only , r+ read/write, not createdW New write-only , w+ New Read-write , both will clear the contents of the file(opens in W mode and cannot be read out.) w+ Readable and writable)the difference between **w+ and r+ :r+: Readable and writable
How do I increase the maximum number of open files under CentOS Linux? How does I open more file descriptors under Linux?The Ulimit command provides control over the resources available to the shell and/or to processes started by it, on system s that allow such control. The maximum number of open
How to open *.fs file with Focusky? Recently some users to the small part of the format for the *.fs file is not known why it can not open. I'll teach you how to use Focusky to open the *.fs file, and you can also publish the pres
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