PS C:Powershell> $IPcfg=ipconfig
PS C:Powershell> $IPcfg

Windows IP Configuration
Ethernet adapter Local Area Connection:

  Connection-specific DNS Suffix . : ***
  Link-local IPv6 Address . . . . . : ***
  IPv4 Address. . . . . . . . . . . : 192.168.140.128
  Subnet Mask . . . . . . . . . . . : 255.255.252.0
  Default Gateway . . . . . . . . . : 192.168.140.1

Tunnel adapter isatap.mossfly.com:

  Connection-specific DNS Suffix . : ***
  Link-local IPv6 Address . . . . . : ***
  Default Gateway . . . . . . . . . :***

Tunnel adapter Teredo Tunneling Pseudo-Interface:

  Media State . . . . . . . . . . . : Media disconnected
  Connection-specific DNS Suffix . :
PS C:Powershell> $IPcfg.Count
22

PS C:Powershell> $ip=ipconfig
PS C:Powershell> $ip -is [array]
True
PS C:Powershell> "abac" -is [array]
False
PS C:Powershell> $str="字符串"
PS C:Powershell> $str.ToCharArray() -is [array]
True

PS C:Powershell> ipconfig | Select-String "IP"

Windows IP Configuration
  Link-local IPv6 Address . . . . . : ***
  IPv4 Address. . . . . . . . . . . : ***
  Link-local IPv6 Address . . . . . : ***

PS C:Powershell> ls

  Directory: C:Powershell

Mode        LastWriteTime   Length Name
----        -------------   ------ ----
d----    2011/11/23   17:25      ABC
d----    2011/11/29   18:21      myscript
-a---    2011/11/24   18:30   67580 a.html
-a---    2011/11/24   20:04   26384 a.txt
-a---    2011/11/24   20:26   12060 alias
-a---    2011/11/24   20:27   12060 alias.ps1
-a---    2011/11/23   17:25     0 b.txt
-a---    2011/11/23   17:25     0 c.txt
-a---    2011/11/23   17:25     0 d.txt
-a---    2011/11/25   11:20    556 employee.xml
-a---    2011/11/29   19:23   21466 function.ps1
-a---    2011/11/28   11:12    186 LogoTestConfig.xml
-a---    2011/11/24   17:37    7420 name.html
-a---    2011/11/28   15:30     63 ping.bat
-a---    2011/11/24   17:44   735892 Powershell_Cmdlets.html
-a---    2011/11/30   16:04    2556 psdrive.html
-a---     2011/12/2   18:47    140 test.ps1
-a---    2011/11/23   17:37    242 test.txt
-a---    2011/11/28   16:42    170 test.vbs
PS C:Powershell> $result=ls
PS C:Powershell> $result.Count
20

PS C:Powershell> $result[0].gettype().fullname
System.IO.DirectoryInfo
PS C:Powershell> $result[0]
  Directory: C:Powershell
Mode        LastWriteTime   Length Name
----        -------------   ------ ----
d----    2011/11/23   17:25      ABC对于任何一个对象都可以使用Format-List * 查看它所有的属性和方法。

PS C:Powershell> $result[0] | fl *

PSPath      : Microsoft.PowerShell.CoreFileSystem::C:PowershellABC
PSParentPath   : Microsoft.PowerShell.CoreFileSystem::C:Powershell
PSChildName    : ABC
PSDrive      : C
PSProvider    : Microsoft.PowerShell.CoreFileSystem
PSIsContainer   : True
BaseName     : ABC
Mode       : d----
Name       : ABC
Parent      : Powershell
Exists      : True
Root       : C:
FullName     : C:PowershellABC
Extension     :
CreationTime   : 2011/11/23 17:25:53
CreationTimeUtc  : 2011/11/23 9:25:53
LastAccessTime  : 2011/11/23 17:25:53
LastAccessTimeUtc : 2011/11/23 9:25:53
LastWriteTime   : 2011/11/23 17:25:53
LastWriteTimeUtc : 2011/11/23 9:25:53
Attributes    : Directory