How to name a file

The file name is the most prominent feature of the document, through which we can find the files we want and distinguish between different types of files. The naming rules for each file are the same, that is the format of the *.*, the first half is the file's official file name, the latter part is the file's attribute tag, which we often say the extension, which determines the type of file, the extension is usually composed of 3~4 English letters. If the extension of the Word file is Doc,mp3, the extension is mp3, and some image files have extensions such as JPG. If your computer is not displayed, see how the file name extension is shown

File naming and naming rules

Different file names can distinguish between different files, and here are some naming conventions.

1. FileName length Rule

You can use up to 255 English characters for any file name, and not more than 127 characters if you use a Chinese character.

2. Available character rules

In principle, you can use the keyboard to enter English letters, symbols, spaces, Chinese, etc. can be used as legitimate characters, but because the following characters are reserved by the system, it can not be used in the file name:/? * "< > |

In addition, if the space is used in the first character of the file name, it is negligible.

3. English file name and case rules

If you use the English file name, the capitalization is not differentiated, but the system can display the uppercase and lowercase characters entered by the user. The extension of the file is certainly more than the several we described above, we will also contact more extensions, the time is long, for different extensions of the file types represented by nature is clear. File extensions are usually made up of 3~4 English letters, most extensions are actually abbreviations for the relevant English words, used to indicate what type of file it belongs to, such as txt text, doc to represent the document, BMP to represent the picture, AVI video, etc. It is important to note that most of the cases we do not need to add the file extension, the system will automatically identify and add, but we must remember that, although we only take the filename, but a file full name should be "filename. Extension".