For example, the older MS-DOS FAT file system supports a maximum of 8 characters for the base file name and 3 characters for the extension, for a total of 12 characters including the dot separator. This is commonly known as an 8. The following fundamental rules enable applications to create and process valid names for files and directories, regardless of the file system:.
Use a period to separate the base file name from the extension in the name of a directory or file. The backslash divides the file name from the path to it, and one directory name from another directory name in a path.
You cannot use a backslash in the name for the actual file or directory because it is a reserved character that separates the names into components. Do not assume case sensitivity.
For more information, see CreateFile. Volume designators drive letters are similarly case-insensitive. Use any character in the current code page for a name, including Unicode characters and characters in the extended character set — , except for the following:. Characters whose integer representations are in the range from 1 through 31, except for alternate data streams where these characters are allowed. For more information about file streams, see File Streams.
Use a period as a directory component in a path to represent the current directory, for example ". For more information, see Paths. Use two consecutive periods.. Also avoid these names followed immediately by an extension; for example, NUL.
For more information, see Namespaces. Do not end a file or directory name with a space or a period. Although the underlying file system may support such names, the Windows shell and user interface does not. However, it is acceptable to specify a period as the first character of a name.
For example, ". When you create a long file name, Windows may also create a short 8. This 8. Cancel Submit. Here is the way to set this.
How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site. The problem is that there is no universal standard for sorting, and what works well in one situation for some people might not for others. ASCII sorts upper case letters ahead of lower case ones, and has some symbols before numbers, some after, some between Z and a and some after z.
Would that poster really expect file names containing symbols to be sorted like that? It's a perennial problem, even requiring MS to assign two different language codes to Castilian Spanish according to whether the alphabet uses the traditional sort order or the modern one. WebDevBooster Here is the code to clean file name in python. Length of file name is beyond of scope. Sign up or log in Sign up using Google.
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Linked 0. See more linked questions. Related Rather, be aware of them and apply them as appropriate. If you are starting a new collection or re-ordering old content you're at the right point to get some discipline into the naming. If some or all of your new content comes in from external sources and is poorly named, sit down with your partners make sure good naming rules are in the contract.
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