解決策は次のとおりです。
gci ./ |Where{ $_.PSPath -notmatch ".*Windows.*"}
ところで、このような問題の解決策を推測するのに役立つことは、現在のオブジェクトが持つメソッドを知ることです。そのために Get-Member を使用しました。出力例:
PS C:\Users\jh> gci ./ | Get-Member
TypeName: System.IO.DirectoryInfo
Name MemberType Definition
---- ---------- ----------
Mode CodeProperty System.String Mode{get=Mode;}
Create Method void Create(), void Create(System.Security.AccessControl.DirectorySecurity ...
CreateObjRef Method System.Runtime.Remoting.ObjRef CreateObjRef(type requestedType)
CreateSubdirectory Method System.IO.DirectoryInfo CreateSubdirectory(string path), System.IO.Director...
Delete Method void Delete(), void Delete(bool recursive)
EnumerateDirectories Method System.Collections.Generic.IEnumerable[System.IO.DirectoryInfo] EnumerateDi...
EnumerateFiles Method System.Collections.Generic.IEnumerable[System.IO.FileInfo] EnumerateFiles()...
EnumerateFileSystemInfos Method System.Collections.Generic.IEnumerable[System.IO.FileSystemInfo] EnumerateF...
Equals Method bool Equals(System.Object obj)
GetAccessControl Method System.Security.AccessControl.DirectorySecurity GetAccessControl(), System....
GetDirectories Method System.IO.DirectoryInfo[] GetDirectories(), System.IO.DirectoryInfo[] GetDi...
GetFiles Method System.IO.FileInfo[] GetFiles(string searchPattern), System.IO.FileInfo[] G...
GetFileSystemInfos Method System.IO.FileSystemInfo[] GetFileSystemInfos(string searchPattern), System...
GetHashCode Method int GetHashCode()
GetLifetimeService Method System.Object GetLifetimeService()
GetObjectData Method void GetObjectData(System.Runtime.Serialization.SerializationInfo info, Sys...
GetType Method type GetType()
InitializeLifetimeService Method System.Object InitializeLifetimeService()
MoveTo Method void MoveTo(string destDirName)
Refresh Method void Refresh()
SetAccessControl Method void SetAccessControl(System.Security.AccessControl.DirectorySecurity direc...
ToString Method string ToString()
PSChildName NoteProperty System.String PSChildName=Contacts
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\jh
PSPath NoteProperty System.String PSPath=Microsoft.PowerShell.Core\FileSystem::C:\Users\jh\Cont...
PSProvider NoteProperty System.Management.Automation.ProviderInfo PSProvider=Microsoft.PowerShell.C...
Attributes Property System.IO.FileAttributes Attributes {get;set;}
CreationTime Property datetime CreationTime {get;set;}
CreationTimeUtc Property datetime CreationTimeUtc {get;set;}
Exists Property bool Exists {get;}
Extension Property string Extension {get;}
FullName Property string FullName {get;}
LastAccessTime Property datetime LastAccessTime {get;set;}
LastAccessTimeUtc Property datetime LastAccessTimeUtc {get;set;}
LastWriteTime Property datetime LastWriteTime {get;set;}
LastWriteTimeUtc Property datetime LastWriteTimeUtc {get;set;}
Name Property string Name {get;}
Parent Property System.IO.DirectoryInfo Parent {get;}
Root Property System.IO.DirectoryInfo Root {get;}
BaseName ScriptProperty System.Object BaseName {get=$this.Name;}