How to check avilable free disk space drive on linux using C#.Net Core

Question

Hi,
I have an console application which is developed with .net core 3.1.
I want to check free available disk space drive on linux.
Please help me on this.
In windows it will look like this, but i need to check on linux

        string maxFreeSpaceDrive = string.Empty;
        long maxFreeSpace = 0;
        try
        {
            DriveInfo[] allDrives = DriveInfo.GetDrives();
            //// Get the max size drive
            foreach (DriveInfo drive in allDrives)
            {
                try
                {
                    if (drive.IsReady && drive.DriveType == DriveType.Fixed)
                    {
                        if (drive.TotalFreeSpace > maxFreeSpace)
                        {
                            maxFreeSpace = drive.TotalFreeSpace;
                            maxFreeSpaceDrive = drive.Name;
                        }
                    }
                }
                catch (IOException)
                {
                }
            }

            return maxFreeSpaceDrive;

Answer 1

As mentioned in the source code of DriveInfo, its parameterized structure is suitable for Windows and Unix, I am not sure whether it is suitable for Linux, you can try it.

var freeBytes = new DriveInfo(path).AvailableFreeSpace;   

Or you can use Process to call the terminal and pass commands like df to get a string like the following, and then process it to get the information you want.

public static class ServersManager  
{        
        public static string GetDiskSpace()  
        {  
            return string.Join(" ", "df").Bash();  
        }  
  
        private static string Bash(this string cmd)  
        {  
            var escapedArgs = cmd.Replace("\"", "\\\"");  
  
            var process = new Process()  
            {  
                StartInfo = new ProcessStartInfo  
                {  
                    FileName = "/bin/bash",  
                    Arguments = $"-c \"{escapedArgs}\"",  
                    RedirectStandardOutput = true,  
                    UseShellExecute = false,  
                    CreateNoWindow = true,  
                }  
            };  
            process.Start();  
            string result = process.StandardOutput.ReadToEnd();  
            process.WaitForExit();  
            return result;  
        }  
}  

The code is excerpted from this link: Finding available space for a directory in C# on Linux
I don't have Linux OS, so I haven't conducted actual tests, you can try to see if it works.

Update:

The above code gets the result of executing certain commands in Linux. If the Linux command is correct, it should be able to get the correct result.

But I don't know much about Linux, which may require you to consult a Linux expert to obtain the appropriate Linux commands.

As for a piece of code that is applicable to both windows and Linux, I have some doubts whether it is possible.

I think it might be better to detect the current OS type first, and then execute different codes:

        public static string GetDiskSpace()  
        {  
            string diskSpace = string.Empty;  
            if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))  
            {  
                diskSpace = GetDiskSpaceInMac();  
            }  
  
            if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))  
            {  
                diskSpace = GetDiskSpaceInLinux();  
            }  
  
            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))  
            {  
                diskSpace = GetDiskSpaceInWindows();  
            }  
  
            return diskSpace;  
        }  

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