I was curious about that *nix like mode for the item ('d----')

[13] gci

    Directory: Microsoft.PowerShell.Core\FileSystem::C:\Users\yvesdolc

Mode                LastWriteTime     Length Name
----                -------------     ------ ----
d----         9/27/2007   6:38 PM            Tracing

So I did

[14] gci | gm

   TypeName: System.IO.DirectoryInfo

Name                      MemberType     Definition
----                      ----------     ----------
Create                    Method         System.Void Create(), System.Void Create(DirectorySecurity directorySecurity)
CreateObjRef              Method         System.Runtime.Remoting.ObjRef CreateObjRef(Type requestedType)
CreateSubdirectory        Method         System.IO.DirectoryInfo CreateSubdirectory(String path), System.IO.DirectoryInfo CreateSubdirectory(String path, Di...
Delete                    Method         System.Void Delete(), System.Void Delete(Boolean recursive)
Equals                    Method         System.Boolean Equals(Object obj)
GetAccessControl          Method         System.Security.AccessControl.DirectorySecurity GetAccessControl(), System.Security.AccessControl.DirectorySecurity...
GetDirectories            Method         System.IO.DirectoryInfo[] GetDirectories(), System.IO.DirectoryInfo[] GetDirectories(String searchPattern), System....
GetFiles                  Method         System.IO.FileInfo[] GetFiles(String searchPattern), System.IO.FileInfo[] GetFiles(String searchPattern, SearchOpti...
GetFileSystemInfos        Method         System.IO.FileSystemInfo[] GetFileSystemInfos(String searchPattern), System.IO.FileSystemInfo[] GetFileSystemInfos()
GetHashCode               Method         System.Int32 GetHashCode()
GetLifetimeService        Method         System.Object GetLifetimeService()
GetObjectData             Method         System.Void GetObjectData(SerializationInfo info, StreamingContext context)
GetType                   Method         System.Type GetType()
get_Attributes            Method         System.IO.FileAttributes get_Attributes()
get_CreationTime          Method         System.DateTime get_CreationTime()
get_CreationTimeUtc       Method         System.DateTime get_CreationTimeUtc()
get_Exists                Method         System.Boolean get_Exists()
get_Extension             Method         System.String get_Extension()
get_FullName              Method         System.String get_FullName()
get_LastAccessTime        Method         System.DateTime get_LastAccessTime()
get_LastAccessTimeUtc     Method         System.DateTime get_LastAccessTimeUtc()
get_LastWriteTime         Method         System.DateTime get_LastWriteTime()
get_LastWriteTimeUtc      Method         System.DateTime get_LastWriteTimeUtc()
get_Name                  Method         System.String get_Name()
get_Parent                Method         System.IO.DirectoryInfo get_Parent()
get_Root                  Method         System.IO.DirectoryInfo get_Root()
InitializeLifetimeService Method         System.Object InitializeLifetimeService()
MoveTo                    Method         System.Void MoveTo(String destDirName)
Refresh                   Method         System.Void Refresh()
SetAccessControl          Method         System.Void SetAccessControl(DirectorySecurity directorySecurity)
set_Attributes            Method         System.Void set_Attributes(FileAttributes value)
set_CreationTime          Method         System.Void set_CreationTime(DateTime value)
set_CreationTimeUtc       Method         System.Void set_CreationTimeUtc(DateTime value)
set_LastAccessTime        Method         System.Void set_LastAccessTime(DateTime value)
set_LastAccessTimeUtc     Method         System.Void set_LastAccessTimeUtc(DateTime value)
set_LastWriteTime         Method         System.Void set_LastWriteTime(DateTime value)
set_LastWriteTimeUtc      Method         System.Void set_LastWriteTimeUtc(DateTime value)
ToString                  Method         System.String ToString()
PSChildName               NoteProperty   System.String PSChildName=Tracing
PSDrive                   NoteProperty   System.Management.Automation.PSDriveInfo PSDrive=C
PSIsContainer             NoteProperty   System.Boolean PSIsContainer=True
PSParentPath              NoteProperty   System.String PSParentPath=Microsoft.PowerShell.Core\FileSystem::C:\Users\yvesdolc
PSPath                    NoteProperty   System.String PSPath=Microsoft.PowerShell.Core\FileSystem::C:\Users\yvesdolc\Tracing
PSProvider                NoteProperty   System.Management.Automation.ProviderInfo PSProvider=Microsoft.PowerShell.Core\FileSystem
Attributes                Property       System.IO.FileAttributes Attributes {get;set;}
CreationTime              Property       System.DateTime CreationTime {get;set;}
CreationTimeUtc           Property       System.DateTime CreationTimeUtc {get;set;}
Exists                    Property       System.Boolean Exists {get;}
Extension                 Property       System.String Extension {get;}
FullName                  Property       System.String FullName {get;}
LastAccessTime            Property       System.DateTime LastAccessTime {get;set;}
LastAccessTimeUtc         Property       System.DateTime LastAccessTimeUtc {get;set;}
LastWriteTime             Property       System.DateTime LastWriteTime {get;set;}
LastWriteTimeUtc          Property       System.DateTime LastWriteTimeUtc {get;set;}
Name                      Property       System.String Name {get;}
Parent                    Property       System.IO.DirectoryInfo Parent {get;}
Root                      Property       System.IO.DirectoryInfo Root {get;}
Mode                      ScriptProperty System.Object Mode {get=$catr = "";...

And was wondering how I could see that ScriptProperty... I don't know, I just tried a couple of things and the first one to work was this:

[11] (gci|gm|?{$_.Name -eq "Mode"}).Definition
System.Object Mode {get=$catr = "";
                    if ( $this.Attributes -band 16 ) { $catr += "d" } else { $catr += "z" };
                    if ( $this.Attributes -band 32 ) { $catr += "a" } else { $catr += "-" } ;
                    if ( $this.Attributes -band 1 )  { $catr += "r" } else { $catr += "-" } ;
                    if ( $this.Attributes -band 2 )  { $catr += "h" } else { $catr += "-" } ;
                    if ( $this.Attributes -band 4 )  { $catr += "s" } else { $catr += "-" } ;


I'm sure there's an easier way but this one worked for me. Have a nice week-end et bonne fin de semaine y buen fin de semana.