filesystems

问题 I have a docker container which does alot of read/write to disk. I would like to test out what happens when my entire docker filesystem is in memory. I have seen some answers here that say it will not be a real performance improvement, but this is for testing. The ideal solution I would like to test is sharing the common parts of each image and copy to your memory space when needed. Each container files which are created during runtime should be in memory as well and separated. it shouldn't

问题 I have a docker container which does alot of read/write to disk. I would like to test out what happens when my entire docker filesystem is in memory. I have seen some answers here that say it will not be a real performance improvement, but this is for testing. The ideal solution I would like to test is sharing the common parts of each image and copy to your memory space when needed. Each container files which are created during runtime should be in memory as well and separated. it shouldn't

问题 I would like to access the $PATH variable from inside a python program. My understanding so far is that sys.path gives the Python module search path, but what I want is $PATH the environment variable. Is there a way to access that from within Python? To give a little more background, what I ultimately want to do is find out where a user has Package_X/ installed, so that I can find the absolute path of an html file in Package_X/. If this is a bad practice or if there is a better way to

问题 I want to open an html file from Chrome on my computer, without an http server, and I want the JavaScript in the HTML file to be able read and write files in the local file system, and browse directories as well. How do I do this using the File System API: https://wicg.github.io/file-system-access/ ? 回答1: File System API is not available currently in Chrome 85. For now you can launch the html file using a batch file which will locate and launch Chrome with the right appropriate command line

问题 I want to open an html file from Chrome on my computer, without an http server, and I want the JavaScript in the HTML file to be able read and write files in the local file system, and browse directories as well. How do I do this using the File System API: https://wicg.github.io/file-system-access/ ? 回答1: File System API is not available currently in Chrome 85. For now you can launch the html file using a batch file which will locate and launch Chrome with the right appropriate command line

问题 We have been using the following code for several years. /// <summary> /// Opens a file and returns an exclusive handle. The file is deleted as soon as the handle is released. /// </summary> /// <param name="path">The name of the file to create</param> /// <returns>A FileStream backed by an exclusive handle</returns> /// <remarks>If another process attempts to open this file, they will recieve an UnauthorizedAccessException</remarks> public static System.IO.FileStream OpenAsLock(string path)

问题 We have been using the following code for several years. /// <summary> /// Opens a file and returns an exclusive handle. The file is deleted as soon as the handle is released. /// </summary> /// <param name="path">The name of the file to create</param> /// <returns>A FileStream backed by an exclusive handle</returns> /// <remarks>If another process attempts to open this file, they will recieve an UnauthorizedAccessException</remarks> public static System.IO.FileStream OpenAsLock(string path)

问题 We have been using the following code for several years. /// <summary> /// Opens a file and returns an exclusive handle. The file is deleted as soon as the handle is released. /// </summary> /// <param name="path">The name of the file to create</param> /// <returns>A FileStream backed by an exclusive handle</returns> /// <remarks>If another process attempts to open this file, they will recieve an UnauthorizedAccessException</remarks> public static System.IO.FileStream OpenAsLock(string path)

问题 I am trying to work around an exception being thrown when trying to recursively walk through all files in root drives, like C:, D:, etc. I am using GCC compiler version 9.3.0 on Mingw64. I got std::filesystem::filesystem_error when trying to read system volume information, example output: Checking "D:\\System Volume Information" filesystem error: cannot increment recursive directory iterator: Invalid argument Code snippet: try { for (auto& p : fs::recursive_directory_iterator(dp, fs:

问题 Since macOS 10.15 (Catalina), a volume, as the user sees it, may actually be comprised of multiple volumes, such as the System and the Data volume. I'm writing a tool that needs to identify these volumes separately because when using specific file operations, such as searchfs and fts_read , which do not cross such volume boundaries, I need to understand which volumes belong together, so that, when the user wants to search a system volume, I know to include both the "System" and its "Data"