filesystems

问题 I have files on my hard drive that throw a PathTooLongException when I access the Fullname property of a FileSystemInfo object. Is there any way around this (excluding renaming the files which is not an option)? http://msdn.microsoft.com/en-us/library/aa365247%28VS.85%29.aspx#maxpath mentioned by other answers suggests putting a "\?\" prefix on the file name but in this case the DirectoryInfo.GetFileSystemInfos() is responsible for creating the FileSystemInfo objects and DirectoryInfo doesn't

问题 I would like to ask a fundamental question about when is it useful to use a system call like fsync. I am beginner and i was always under the impression that write is enough to write to a file, and samples that use write actually write to the file at the end. So what is the purpose of a system call like fsync? Just to provide some background i am using Berkeley DB library version 5.1.19 and there is a lot of talk around the cost of fsync() vs just writing. That is the reason i am wondering.

问题 I would like to ask a fundamental question about when is it useful to use a system call like fsync. I am beginner and i was always under the impression that write is enough to write to a file, and samples that use write actually write to the file at the end. So what is the purpose of a system call like fsync? Just to provide some background i am using Berkeley DB library version 5.1.19 and there is a lot of talk around the cost of fsync() vs just writing. That is the reason i am wondering.

问题 How do you exclude a folder when performing file operations i.e. cp etc. I would currently use the wild card * to apply file operation to all, but I need to exclude one single folder. The command I'm actually wanting to use is chown to change the owner of all the files in a directory but I need to exclude one sub directory. 回答1: If you're using bash and enable extglob via shopt -s extglob then you can use !(<pattern>) to exclude the given pattern. 回答2: find dir_to_start -name dir_to_exclude

问题 So i have made an application which performs some reading/writing to files. I want to make the Path Traversal as independent of O.S. Different operating systems use different characters as file separators. For example, Microsoft Windows systems use "\" , while UNIX systems use "/" . When applications have to run on different platforms, the use of hardcoded file separators can lead to incorrect execution of application logic. So i came up with using a double backward slash '\\' . But now i

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 8 years ago . Improve this question I need to construct a SDHC card (FAT32) with a directory where I have chosen the short and long filenames independently. E.g. short filename MYDIR but long name i am a cool name. yeah. check out the awesomeness. Based on Wikipedia, there is no mandatory correlation between the two names, so

问题 How is the Best and fastest way to do it? 回答1: PowerShell: $f = new-object System.IO.FileStream c:\temp\test.dat, Create, ReadWrite $f.SetLength(42MB) $f.Close() This will create a file c:\temp\test.dat that consists of 42MB of nullbytes. You can of course just give byte count instead as well. (42MB = 42 * 1048576 for PowerShell) 回答2: I found this Page, I try it and work great. To create a single File use fsutil file createnew filename filesize To create a lot of Files use For /L %i in (1,1

问题 How is the Best and fastest way to do it? 回答1: PowerShell: $f = new-object System.IO.FileStream c:\temp\test.dat, Create, ReadWrite $f.SetLength(42MB) $f.Close() This will create a file c:\temp\test.dat that consists of 42MB of nullbytes. You can of course just give byte count instead as well. (42MB = 42 * 1048576 for PowerShell) 回答2: I found this Page, I try it and work great. To create a single File use fsutil file createnew filename filesize To create a lot of Files use For /L %i in (1,1

问题 How is the Best and fastest way to do it? 回答1: PowerShell: $f = new-object System.IO.FileStream c:\temp\test.dat, Create, ReadWrite $f.SetLength(42MB) $f.Close() This will create a file c:\temp\test.dat that consists of 42MB of nullbytes. You can of course just give byte count instead as well. (42MB = 42 * 1048576 for PowerShell) 回答2: I found this Page, I try it and work great. To create a single File use fsutil file createnew filename filesize To create a lot of Files use For /L %i in (1,1

问题 How is the Best and fastest way to do it? 回答1: PowerShell: $f = new-object System.IO.FileStream c:\temp\test.dat, Create, ReadWrite $f.SetLength(42MB) $f.Close() This will create a file c:\temp\test.dat that consists of 42MB of nullbytes. You can of course just give byte count instead as well. (42MB = 42 * 1048576 for PowerShell) 回答2: I found this Page, I try it and work great. To create a single File use fsutil file createnew filename filesize To create a lot of Files use For /L %i in (1,1