[Storage] Fix issue 14234 (#14266)

Author: blueww

src/Storage/Storage.Management/ChangeLog.md

@@ -34,6 +34,7 @@
     - `New-AzStorageEncryptionScope`
 * Supported copy block blob synchronously, with encryption scope
     - `Copy-AzStorageBlob`
+* Fixed issue that Get-AzStorageBlobContent use wrong directory separator char on Linux and MacOS [#14234]
 
 ## Version 3.3.0
 * Supported RoutingPreference settings in create/update Storage account

src/Storage/Storage/Common/BlobToFileSystemNameResolver.cs

@@ -37,7 +37,7 @@ protected override string DirSeparator
         {
             get
             {
-                return "\\";
+                return Path.DirectorySeparatorChar.ToString();
             }
         }
 

src/Storage/Storage/Common/NameUtil.cs

@@ -271,7 +271,7 @@ public static string ConvertBlobNameToFileName(string blobName, DateTimeOffset?
             //replace dirctionary
             Dictionary<string, string> replaceRules = new Dictionary<string, string>()
                 {
-                    {"/", "\\"}
+                    {"/", Path.DirectorySeparatorChar.ToString()}
                 };
 
             foreach (KeyValuePair<string, string> rule in replaceRules)