Hash Table构建

 get-item e:\test\* |format-table @{name="aa";expression={$_.name.tostring().split(".")[1]}}

 get-childitem e:\test\* |select name,@{name="changdu";expression={$_.name.length}},lastwritetime |format-table -autosize

 Get-WmiObject -Class Win32_LogicalDisk -Filter "DriveType=3" -ComputerName . |
 Format-Table deviceid,@{Label="free(GB)"; Expression={$_.freespace/1024/1024/1024}},@{Label="size(GB)"; Expression={$_.size/1024/1024/1024}} -AutoSize | Out-String

================================================================

Hash Table只能add两个属性，一个name，一个value

1 $n =$null
2 $n = [pscustomobject]@{
3 Name= 'Boe'
4 Number = 1
5 ID = 007
6 }
7 $n.add("p1","v1")

结果：

 $states = @{"Washington" = "Olympia"; "Oregon" = "Salem"; California = "Sacramento"}
 $states.Add("Alaska", "Fairbanks")
 $states.Remove("Alaska")
 $states.Set_Item("Alaska", "Juneau")
 $states.Get_Item("Oregon")
 $states.ContainsKey("Oregon")
 $states.ContainsValue("Salem")
 $states | Sort-Object
 $states.GetEnumerator() | Sort-Object Name

 $states.GetEnumerator() | % {$_.name} 

结果：  只有 .name和.value 两个属性列，不能再添加其他属性列

 $hash=$null
 $hash=@{}
 $ps = gps
 foreach($p in $ps)
 {
 $hash.add($p.id,$p.processname)
 }

 $hash.getenumerator()| % {$_.name}
 # $hash[0] 或者 $hash.getenumerator()[0] #提示出错

结果：

===================================================

这个不是Hash Table

 $ps = gps
 $hashs = $null
 $hashs = @()
 Foreach ($p in $ps)
     {
      $hash = ""|Select pid,pname
      $hash.pid = $p.ID
      $hash.pname = $p.Processname
      $hashs += $hash
     }

 $hashs[0].pid
 $hashs.psobject|select -ExpandProperty baseobject

 $results=@()
 foreach ($m in $ms)
 {
 $result=""|select a,b,c
 $result.a = $m.a
 $result.b = $m.b
 $result.c = $m.c
 $results += $result
 }
 $results | export-csv -encoding utf8 -notypeinformation -path c:\perc\result.csv

 Example1：

 $servers="10.4.34.41","10.4.34.40","10.4.34.36"#,"10.4.34.37","10.4.34.39"
 $results = @()
 foreach ($c in $servers)
 {
 $serverpass="Dell1950"
 $UserName="Administrator"
 $Password = ConvertTo-SecureString $serverpass -AsPlainText –Force
 $cred = New-Object System.Management.Automation.PSCredential($UserName,$Password)
 $cs = gwmi win32_computersystem -computer $c -Credential $cred
 $sys = gwmi win32_operatingsystem -computer $c -Credential $cred

 $result=""|select name,version
 $result.name = $cs.name
 $result.version =$sys.version
 $results +=$result
 }
 $results

=====================

Example2：

 $infors = gc E:\Port-Test_htm\ports01.txt
 $results=@()
 foreach ($infor in $infors)
 {
 $a=$infor.split(",")[0]
 $b=$infor.split(",")[1]
 $result=""|select name,port
 $result.name = $a
 $result.port = $b
 $results += $result
 }
 $results

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