{"id":33107,"date":"2010-11-16T17:17:04","date_gmt":"2010-11-16T16:17:04","guid":{"rendered":"https:\/\/www.fuhaijun.com\/?p=33107"},"modified":"2024-11-06T11:22:38","modified_gmt":"2024-11-06T03:22:38","slug":"windows-powershell-2-0%e8%af%ad%e8%a8%80%e4%b9%8b%e5%ad%97%e9%9d%a2%e7%b1%bb%e5%9e%8b%e7%b3%bb%e7%bb%9f","status":"publish","type":"post","link":"https:\/\/www.fuhaijun.com\/?p=33107","title":{"rendered":"Windows PowerShell 2.0\u8bed\u8a00\u4e4b\u5b57\u9762\u7c7b\u578b\u7cfb\u7edf"},"content":{"rendered":"<p>PowerShell\u8bed\u8a00\u5141\u8bb8\u901a\u8fc7\u4e00\u4e2a\u5b57\u9762\u7c7b\u578b\uff08type Literals\uff09\u6765\u8bbf\u95ee\u7c7b\u578b\uff0c\u5b83\u662f\u7528\u62ec\u53f7\u62ac\u8d77\u7684\u7c7b\u578b\u540d\uff0c\u8fd4\u56de.NET\u5e95\u5c42\u7684System.Type\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; [System.Int32]\n\nIsPublic IsSerial Name                                     BaseType\n-------- -------- ----                                     --------\nTrue     True     Int32                                    System.ValueType\n\nPS C:\\&gt; [System.String]\n\nIsPublic IsSerial Name                                     BaseType\n-------- -------- ----                                     --------\nTrue     True     String                                   System.Object\n\nPS C:\\&gt; [System.Diagnostics.Process]\n\nIsPublic IsSerial Name                                     BaseType\n-------- -------- ----                                     --------\nTrue     False    Process                                  System.ComponentM...\n                               System.ComponentM...<\/pre>\n<p>\u4e0d\u5fc5\u5728\u4efb\u4f55\u60c5\u51b5\u4e0b\u90fd\u91cd\u590dSystem\u547d\u540d\u7a7a\u95f4\u7684\u524d\u7f00\uff0c\u8fd9\u65f6\u56e0\u4e3a\u6240\u7528\u7684\u5927\u591a\u6570\u7c7b\u578b\u90fd\u5728\u547d\u540d\u7a7a\u95f4\u4e0b\u3002PowerShell\u5141\u8bb8\u7701\u7565\u8fd9\u4e2a\u524d\u7f00\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; [Diagnostics.Process]\n\nIsPublic IsSerial Name                                     BaseType\n-------- -------- ----                                     --------\nTrue     False    Process                                  System.ComponentM...\n\u4e3a\u4e86\u65b9\u4fbf\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u5982\u4e0b\u5e38\u7528\u7c7b\u578b\u522b\u540d\u3002\n\uff081\uff09int\u3001short\u548clong\uff1a\u5206\u522b\u53c2\u8003System.Int32\u3001System.Int16\u548cSytem.Int64\u7c7b\u578b\u3002\n\uff082\uff09byte\u548csbyte\uff1a\u5bf9\u5e94\u65e0\u7b26\u53f7\u7684System.Int32\u548c\u6709\u7b26\u53f7\u7684System.SByte\u7c7b\u578b\u3002\n\uff083\uff09void\uff1a\u5bf9\u5e94\u6ca1\u6709\u7c7b\u578b\u3002\n\uff084\uff09string\uff1a\u5bf9\u5e94System.String\u7c7b\u578b\u3002\n\uff085\uff09float\u548csingle\uff1a\u5bf9\u5e94System.Single\u800cdouble\u5bf9\u5e94\u4e8eSytem.Double\u7c7b\u578b\u3002\n\uff086\uff09decimal\uff1a\u5bf9\u5e94System.Decimal\u7684\u7c7b\u578b\u3002\n\uff087\uff09regex\uff1a\u5bf9\u5e94System.Text.RegularExpressions.Regex\u3002\n\uff088\uff09adsi\uff1a\u5bf9\u5e94System.DirectoryServices.DirectoryEntry\u3002\n\uff089\uff09wmi\u3001wmiclass\u548cwmisearcher\uff1a\u5206\u522b\u5bf9\u5e94System.Management.\nManagementObject\u3001System.Management.\nManagementClass\u548cSystem.ManagementObjectSearcher\u3002<\/pre>\n<p>\u4e0d\u9700\u8981\u8bb0\u5fc6\u4efb\u4f55\u522b\u540d\u7684\u542b\u4e49\uff0c\u53ef\u4ee5\u67e5\u8be2\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; ([regex]).Fullname\nSystem.Text.RegularExpressions.Regex\nPS C:\\&gt; ([adsi]).Fullname\nSystem.DirectoryServices.DirectoryEntry\nPS C:\\&gt; ([wmisearcher]).Fullname\nSystem.Management.ManagementObjectSearcher\nPS C:\\&gt; ([wmi]).Fullname\nSystem.Management.ManagementObject<\/pre>\n<p><b>\u7c7b\u578b\u8f6c\u6362<\/b><\/p>\n<p>\u5728\u539f\u59cb\u5bf9\u8c61\u524d\u9762\u653e\u7f6e\u5b57\u9762\u7c7b\u578b\uff0c\u901a\u5e38\u5b57\u9762\u7c7b\u578b\u4f1a\u901a\u77e5Shell\u5b8c\u6210\u5bf9\u8c61\u7c7b\u578b\u7684\u8f6c\u6362\u3002\u5982\u679c\u6b63\u786e\uff0c\u5c06\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\u3002\u4e0b\u4f8b\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6574\u578b\uff1a <\/p>\n<pre>PS C:\\&gt; $str=&quot;10&quot;\nPS C:\\&gt; $str.GetType().FullName\nSystem.String\nPS C:\\&gt; $Num=[int]$str\nPS C:\\&gt; $Num\n10\nPS C:\\&gt; $Num.GetType().FullName\nSystem.Int32<\/pre>\n<p>\u5982\u679c\u5b57\u7b26\u4e32\u672c\u8eab\u53ef\u4ee5\u8f6c\u6362\uff0c\u8f6c\u6362\u5f88\u65b9\u4fbf\uff1b\u5426\u5219\u5c06\u4f1a\u51fa\u9519\u3002\u4e0b\u4f8b\u5728\u8f6c\u6362\u51fa\u9519\u65f6\u629b\u51fa\u5f02\u5e38\uff1a <\/p>\n<pre>PS C:\\&gt; [int] &quot;not a integer string&quot;\nCannot convert value &quot;not a integer string&quot; to type &quot;System.Int32&quot;. Error: &quot;\u8f93\n\u5165\u5b57\u7b26\u4e32\u7684\u683c\u5f0f\u4e0d\u6b63\u786e\u3002&quot;\n&lt;CENTER&gt;&lt;ccid_nobr&gt;\n&lt;table width=&quot;400&quot; border=&quot;1&quot; cellspacing=&quot;0&quot; cellpadding=&quot;2&quot; \n bordercolorlight = &quot;black&quot; bordercolordark = &quot;#FFFFFF&quot; align=&quot;center&quot;&gt;\n&lt;tr&gt;\n    &lt;td bgcolor=&quot;e6e6e6&quot; class=&quot;code&quot; style=&quot;font-size:9pt&quot;&gt;\n    &lt;pre&gt;&lt;ccid_code&gt;  \nAt line:1 char:6\n+ [int] &lt;&lt;&lt;&lt;  &quot;not a integer string&quot;<\/pre>\n<p>PowerShell\u4e3b\u8981\u4f9d\u9760.NET\u6846\u67b6\u7c7b\u578b\u8f6c\u6362\u673a\u5236\u5e76\u4e3a\u5f00\u53d1\u4eba\u5458\u63d0\u4f9b\u4e86\u65b9\u4fbf\u7684\u7c7b\u578b\u8f6c\u6362\u5de5\u5177\uff0c\u5904\u7406\u7c7b\u578b\u8f6c\u6362\u4efb\u52a1\u7684\u7b56\u7565\u5982\u4e0b\u3002 <\/p>\n<p>\uff081\uff09\u68c0\u67e5\u662f\u5426\u53ef\u4ee5\u4ece\u65e7\u7c7b\u578b\u8f6c\u6362\u5230\u65b0\u7c7b\u578b\uff0c\u5982\u679c\u5728.NET\u4e2d\u53ef\u4ee5\u5b9e\u73b0\uff0c\u7c7b\u578b\u5fc5\u987b\u76f8\u540c\u6216\u5176\u4e2d\u4e00\u4e2a\u76f4\u63a5\u6216\u8005\u95f4\u63a5\u7ee7\u627f\u3002 <\/p>\n<p>\uff082\uff09\u5982\u679c\u7c7b\u578b\u95f4\u8f6c\u6362\u5df2\u7ecf\u88ab\u5185\u7f6e\u5230\u8bed\u8a00\u4e2d\uff0cPowerShell\u4f1a\u5c1d\u8bd5\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u3002 <\/p>\n<p>\uff083\uff09\u67e5\u627eTypeConverter\u6216PSTypeConverter\u76f8\u5173\u7c7b\uff0c\u524d\u8005\u662f.NET\u5185\u7f6e\u7684\u7c7b\u578b\u8f6c\u6362\u673a\u5236\uff1b\u540e\u8005\u662fPowerShell\u7279\u5b9a\u7684\u7c7b\u578b\u8f6c\u6362\u5bf9\u8c61\u3002\u4e8c\u8005\u5747\u901a\u8fc7\u7528\u6b63\u786e\u7684.NET\u5c5e\u6027\u6807\u8bb0\u76ee\u6807\u81ea\u5b9a\u4e49\u7c7b\u3001\u5173\u8054\u76ee\u6807\u7c7b\u578b\u548c\u7f16\u8bd1\u7c7b\u578b\u7c7b\u3002\u5f88\u591a\u73b0\u5728.NET\u7c7b\u5df2\u4e0e\u7c7b\u578b\u8f6c\u6362\u5668\u5173\u8054\uff0cPowerShell\u80fd\u591f\u5c06\u8fd9\u4e9b\u7c7b\u65e0\u7f1d\u5730\u5728\u7c7b\u578b\u95f4\u8f6c\u6362\u3002\u53e6\u5916\uff0c\u53ef\u4ee5\u5728Shell\u6269\u5c55\u7c7b\u578b\u7cfb\u7edf\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u5c06\u7c7b\u578b\u4e0e\u7c7b\u578b\u8f6c\u6362\u5668\u5173\u8054\u8d77\u6765\u3002 <\/p>\n<p>\uff084\uff09\u5c1d\u8bd5\u4ece\u539f\u59cb\u5bf9\u8c61\u8f6c\u6362\u5230\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u901a\u8fc7\u8c03\u7528\u76ee\u6807\u5bf9\u8c61\u7c7b\u578b\u7684Parse()\u65b9\u6cd5\u4ece\u5b57\u7b26\u4e32\u7c7b\u578b\u8f6c\u6362\u5230\u76ee\u6807\u7c7b\u578b\u3002 <\/p>\n<p>\uff085\uff09\u67e5\u627e\u53ef\u4ee5\u63a5\u53d7\u539f\u59cb\u7c7b\u578b\u5bf9\u8c61\u7684\u65b0\u7c7b\u578b\u7ed3\u6784\u4f53\uff0c\u5982\u679c\u627e\u5230\uff0c\u5219\u7528\u5176\u6784\u9020\u65b0\u5bf9\u8c61\u3002 <\/p>\n<p>\uff086\uff09\u641c\u7d22\u4e24\u79cd\u5bf9\u8c61\u7c7b\u578b\u7684\u663e\u5f0f\u6216\u9690\u5f0f\u8f6c\u6362\u64cd\u4f5c\u7b26\uff0c\u9002\u5f53\u7684\u64cd\u4f5c\u7b26\u4f1a\u88ab\u7f16\u8bd1\u6210\u5206\u522b\u4ee5op_Explicit\u548cop_Implicit\u547d\u540d\u7684\u663e\u793a\u548c\u9690\u5f0f\u9759\u6001\u65b9\u6cd5\u3002\u5982\u679c\u627e\u5230\u4e86\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u5c06\u4f1a\u8c03\u7528\u8be5\u65b9\u6cd5\u8f6c\u6362\u5e76\u8fd4\u56de\u5bf9\u8c61\u3002 <\/p>\n<p>\uff087\uff09\u68c0\u67e5\u539f\u59cb\u7c7b\u578b\u662f\u5426\u5df2\u7ecf\u6267\u884c.NET\u7684IConvertible\u63a5\u53e3\uff0c\u5982\u679c\u6267\u884c\uff0c\u7c7b\u578b\u80fd\u591f\u8f6c\u6362\u4e3a\u8bf8\u5982int\u3001double\u53cadecimal\u4e4b\u7c7b\u7684\u57fa\u7840\u7c7b\u578b\u3002 <\/p>\n<p>PowerShell\u7684\u5185\u7f6e\u7c7b\u578b\u8f6c\u6362\u89c4\u5219\u5982\u4e0b\u3002 <\/p>\n<p>\uff081\uff09\u6bcf\u4e00\u4e2a\u5bf9\u8c61\u80fd\u591f\u88ab\u8f6c\u6362\u4e3aPSObject\uff0cPowerShell\u4f1a\u81ea\u52a8\u6267\u884c\u8fd9\u4e2a\u64cd\u4f5c\u3002\u5927\u90e8\u5206\u60c5\u51b5\u4e0b\u6ca1\u6709\u53c2\u8003\u5bf9\u8c61\uff0c\u4f46\u662f\u4f7f\u7528\u6307\u5411\u5b9e\u9645\u5bf9\u8c61\u7684PSObject\u5b9e\u4f8b\u3002 <\/p>\n<p>\uff082\uff09void\u88ab\u8f6c\u6362\u4e3a\u8f6c\u6362$null\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; ([void] 5) -eq $null\nTrue<\/pre>\n<p>\uff083\uff09\u53ef\u4ee5\u628a\u6240\u6709\u7684\u5bf9\u8c61\u548c\u96c6\u5408\u7c7b\u578b\u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u8fd9\u91cc\u7684\u96c6\u5408\u88ab\u5b9a\u4e49\u4e3a\u6267\u884cICollextion\u63a5\u53e3\u7684.NET\u7c7b\u578b\u3002.NET\u6846\u67b6\u6709\u591a\u4e2a\u5185\u7f6e\u96c6\u5408\u7c7b\uff0c\u800c\u4e14\u96c6\u5408\u7c7b\u901a\u8fc7\u5f00\u53d1\u4eba\u5458\u8c03\u7528\u63a5\u53e3\u6765\u6267\u884c\u3002\u8fd9\u610f\u5473\u7740\u6211\u4eec\u80fd\u591f\u628a\u4efb\u4f55\u7684\u96c6\u5408\u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; ([object[]] 5).GetType().FullName\nSystem.Object[]\nPS C:\\&gt; $string = New-Object Collections.Specialized.StringCollection\nPS C:\\&gt; ([object[]] $string).GetType().FullName\nSystem.Object[]<\/pre>\n<p>\uff084\uff09\u53ef\u4ee5\u6309\u7167\u4efb\u4f55\u975e\u7a7a\u548c\u975enull\u5bf9\u8c61\u4e3a\u771f\u7684\u65b9\u5f0f\u628a\u6240\u6709\u5bf9\u8c61\u8f6c\u6362\u4e3aBoolean\u7c7b\u578b\u3002 <\/p>\n<p>\uff085\uff09\u6240\u6709\u5bf9\u8c61\u80fd\u591f\u88ab\u8f6c\u6362\u4e3astring\u7c7b\u578b\u3002 <\/p>\n<p>\uff086\uff09IDictionary\u5bf9\u8c61\u80fd\u591f\u8f6c\u6362\u4e3a\u54c8\u5e0c\u8868\uff0c.NET\u6846\u67b6\u4e2d\u7684IDictionary\u63a5\u53e3\u88ab\u62e5\u6709\u4e00\u7cfb\u5217\u952e-\u503c\u6620\u5c04\u7684\u5bf9\u8c61\u6765\u6267\u884c\u3002\u54c8\u5e0c\u8868\u7c7b\u7ecf\u5e38\u88ab\u7528\u5728\u5b57\u5178\u5bf9\u8c61\u4e2d\uff0c\u4e0b\u4f8b\u4eceOrderedDictionary\u5bf9\u8c61\u8f6c\u6362\u5230\u54c8\u5e0c\u8868\uff1a <\/p>\n<pre>PS C:\\&gt; $dict=New-Object Collections.Specialized.OrderedDictionary\nPS C:\\&gt; $dict[&quot;item1&quot;]=3\nPS C:\\&gt; $hash=[Hashtable] $dict\nPS C:\\&gt; $hash\n\nName                           Value\n----                           -----\nitem1                          3\n\nPS C:\\&gt; $hash.GetType().FullName\nSystem.Collections.Hashtable\nPS C:\\&gt; $dict.GetType().FullName\nSystem.Collections.Specialized.OrderedDictionary<\/pre>\n<p>\u628a\u53d8\u91cf\u8f6c\u6362\u4e3aRSReference\u65f6\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u6307\u5411\u539f\u578b\u7684\u57fa\u51c6\u53d8\u91cf\uff0c\u4fee\u6539\u57fa\u51c6\u503c\u5373\u4fee\u6539\u539f\u578b\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; $a=3\nPS C:\\&gt; $b=[ref]$a\nPS C:\\&gt; $b.Value=4\nPS C:\\&gt; $b.Value\n4\nPS C:\\&gt; $a\n4<\/pre>\n<p>\u6211\u4eec\u5c06\u4f1a\u5728\u7b2c7\u7ae0\u4e2d\u8be6\u7ec6\u4ecb\u7ecd\u3002 <\/p>\n<p>\uff087\uff09\u9002\u5f53\u683c\u5f0f\u7684\u5b57\u7b26\u4e32\u53ef\u4ee5\u88ab\u8f6c\u6362\u4e3aXML\u6587\u6863\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; $doc=[xml] &quot;&lt;root&gt;&lt;item&gt;2&lt;\/item&gt;&lt;\/root&gt;&quot;\nPS C:\\&gt; $doc.root.item\n2<\/pre>\n<p>\uff088\uff09\u811a\u672c\u5757\u53ef\u4ee5\u8f6c\u6362\u4e3a.NET\u7684\u59d4\u6d3e\u59d4\u6d3e\u662f\u6307\u5411\u65b9\u6cd5\u6216\u811a\u672c\u5757\u7684\u5bf9\u8c61\u7c7b\u578b\uff0c\u901a\u5e38\u4f1a\u4f5c\u7528\u4e8e\u5bf9\u8c61\u89e6\u53d1\u4e8b\u4ef6\u5904\u7406\u4ee3\u7801\u3002\u4f7f\u7528\u53ef\u89e6\u53d1\u4e8b\u4ef6\u7684.NET\u7c7b\u578b\u65f6\uff0c\u901a\u5e38\u9700\u8981\u628a\u811a\u672c\u5757\u8f6c\u6362\u4e3a\u59d4\u6d3e\u3002 <\/p>\n<p>\u5728\u4ece\u5305\u542b\u540d\u79f0\u3001\u8def\u5f84\u6216\u67e5\u8be2\u5b57\u7b26\u4e32\u8f6c\u6362\u65f6\uff0c\u5bf9\u8c61\u80fd\u591f\u88ab\u521b\u5efa\u548c\u83b7\u53d6\u3002 <\/p>\n<p>\uff089\uff09\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u7b26\u6570\u7ec4\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; [char[]] &quot;Chars&quot;\nC\nh\na\nr\ns<\/pre>\n<p>\uff0810\uff09\u5b57\u7b26\u4e32\u53ef\u4ee5\u8f6c\u6362\u4e3a\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u8fd9\u65f6\u5b57\u7b26\u4e32\u88ab\u4f5c\u4e3a\u5339\u914d\u6a21\u5f0f\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; ([regex] &quot;a.*?b&quot;).GetType().FullName\nSystem.Text.RegularExpressions.Regex<\/pre>\n<p>\uff0811\uff09\u5b57\u7b26\u4e32\u53ef\u4ee5\u521b\u5efaWMI\u5bf9\u8c61\uff08\u53c2\u89c1\u7b2c22\u7ae0\uff09\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; [wmisearcher] 'select * from Win32_Process'\nScope     : System.Management.ManagementScope\nQuery     : System.Management.ObjectQuery\nOptions   : System.Management.EnumerationOptions\nSite      :\nContainer :\n\nPS C:\\&gt; [WMI]'\\\\.\\root\\cimv2:Win32_Process.Handle=0'\n\u2026\u2026\nDescription                : System Idle Process\n\u2026\u2026\n\nPS C:\\&gt; ([wmiclass] &quot;Win32_Share&quot;).GetType().FullName\nSystem.Management.ManagementClass<\/pre>\n<p>\uff0812\uff09\u5b57\u7b26\u4e32\u53ef\u4ee5\u8f6c\u6362\u4e3a\u6d3b\u52a8\u76ee\u5f55\u5b9e\u4f8b\uff0c\u8f6c\u6362\u8fdb\u7a0b\u4f7f\u7528\u5b57\u7b26\u4e32\u4f5c\u4e3aDircetoryEntry\u8def\u5f84\u3002\u4e0b\u4f8b\u4f7f\u7528PSBase\u66ff\u4ee3\u9002\u914d\u5668\u89c6\u56fe\u83b7\u53d6\u771f\u5b9e\u7684\u5bf9\u8c61\u7c7b\u578b\uff1a <\/p>\n<pre>PS C:\\&gt; $user=[ADSI]&quot;WinNT:\/\/.\/Server,admin&quot;\nPS C:\\&gt; $user.PSBase.GetType().FullName\nSystem.DirectoryServices.DirectoryEntry<\/pre>\n<p>\uff0813\uff09\u5b57\u7b26\u4e32\u53ef\u4ee5\u6307\u5411.NET\u7c7b\u578b\uff0c\u8f93\u5165\u5b57\u7b26\u4e32\u88ab\u4f5c\u4e3a\u7c7b\u578b\u540d\uff0c\u540c\u6837\u53ef\u4ee5\u7701\u7565System\u547d\u540d\u7a7a\u95f4\u524d\u7f00\uff0c\u5982\uff1a <\/p>\n<pre>PS C:\\&gt; [type] &quot;System.Diagnostics.Process&quot;\n\nIsPublic IsSerial Name                                     BaseType\n-------- -------- ----                                     --------\nTrue     False    Process                                  System.ComponentM...\n\nPS C:\\&gt; [type] &quot;Diagnostics.Process&quot;\n\nIsPublic IsSerial Name                                     BaseType\n-------- -------- ----                                     --------\nTrue     False    Process                                  System.ComponentM...<\/pre>\n<p><b>\u8bbf\u95ee\u9759\u6001\u6210\u5458<\/b><\/p>\n<p>\u5b57\u9762\u7c7b\u578b\u53ef\u4ee5\u7528\u4e8e\u8bbf\u95ee\u9759\u6001\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u4e3a\u6b64\u4f7f\u7528\u53cc\u5192\u53f7\uff08::\uff09\u6765\u5206\u5272\u5b57\u9762\u7c7b\u578b\u548c\u6210\u5458\u540d\u3002\u4e0b\u4f8b\u83b7\u53d6\u4e00\u4e2a\u9759\u6001\u5c5e\u6027\u503c\uff1a <\/p>\n<pre>PS C:\\&gt; [datetime]::Today\n\n2008\u5e7412\u670816\u65e5 0:00:00<\/pre>\n<p>\u8c03\u7528\u9759\u6001\u65b9\u6cd5\u4e0e\u6b64\u7c7b\u4f3c\uff0c\u4e0b\u4f8b\u8c03\u7528Parse\u65b9\u6cd5\u521b\u5efadouble\u5bf9\u8c61\uff1a <\/p>\n<pre>PS C:\\&gt; [double]::Parse(&quot;2.5&quot;)<\/pre>\n<p>2.5 <\/p>\n<p><b>\u603b \u7ed3<\/b><\/p>\n<p>PowerShell\u4f5c\u4e3a\u5f3a\u5927\u4e14\u590d\u6742\u7684\u8bed\u8a00\uff0c\u5e76\u6ca1\u6709\u8fc7\u4e8e\u4e25\u683c\u6216\u5bf9\u65b0\u624b\u4e0d\u53cb\u597d\u3002\u56e0\u4e3a\u5b83\u628a\u6240\u6709\u7684\u5bf9\u8c61\u7c7b\u578b\u901a\u8fc7\u9002\u914d\u5668\u548c\u6269\u5c55\u7edf\u4e00\u5b58\u53d6\uff0c\u6240\u4ee5\u7528\u6237\u80fd\u591f\u627e\u5230\u5feb\u901f\u5165\u624b\u7684\u9014\u5f84\u3002\u6700\u5e38\u7528\u7684\u5bf9\u8c61\u662f\u83b7\u53d6\u5b9e\u4f53\u6269\u5c55\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u811a\u672c\u7f16\u5199\u8005\u7684\u521b\u9020\u6027\uff0c\u5e76\u964d\u4f4e\u4e86\u5b66\u4e60\u7684\u96be\u5ea6\u3002 <\/p>\n<p>\u5728\u9700\u8981\u65f6\u7c7b\u578b\u6269\u5c55\u7cfb\u7edf\u5728\u5f15\u64ce\u4e2d\u8f6c\u6362\u5bf9\u8c61\uff0c\u4ece\u800c\u8282\u7701\u4e86\u5b9d\u8d35\u7684\u65f6\u95f4\u5e76\u589e\u52a0\u4e86\u811a\u672c\u7684\u53ef\u8bfb\u6027\u3002\u6240\u6709\u8fd9\u4e00\u5207\u4f7f\u5f97PowerShell\u5e26\u6709.NET\u548cWindows\u7684\u539f\u59cb\u52a8\u529b\uff0c\u6210\u4e3a\u5f3a\u5927\u7684\u6df7\u7c7b\u811a\u672c\u8bed\u8a00\u3002<\/p>\n<p>\u8d5b\u8fea\u7f51\u5730\u5740\uff1a<a title=\"http:\/\/tech.ccidnet.com\/art\/33093\/20100610\/2082895_1.html\" href=\"http:\/\/tech.ccidnet.com\/art\/33093\/20100610\/2082895_1.html\">http:\/\/tech.ccidnet.com\/art\/33093\/20100610\/2082895_1.html<\/a><\/p>\n<p>\u4f5c\u8005: \u4ed8\u6d77\u519b<br \/>\n  <br \/>\u7248\u6743\uff1a\u672c\u6587\u7248\u6743\u5f52\u4f5c\u8005\u6240\u6709<\/p>\n<p>\u8f6c\u8f7d\uff1a\u6b22\u8fce\u8f6c\u8f7d\uff0c\u4e3a\u4e86\u4fdd\u5b58\u4f5c\u8005\u7684\u521b\u4f5c\u70ed\u60c5\uff0c\u8bf7\u6309\u8981\u6c42\u3010\u8f6c\u8f7d\u3011\uff0c\u8c22\u8c22<\/p>\n<p>\u8981\u6c42\uff1a\u672a\u7ecf\u4f5c\u8005\u540c\u610f\uff0c\u5fc5\u987b\u4fdd\u7559\u6b64\u6bb5\u58f0\u660e\uff1b\u5fc5\u987b\u5728\u6587\u7ae0\u4e2d\u7ed9\u51fa\u539f\u6587\u8fde\u63a5\uff1b\u5426\u5219\u5fc5\u7a76\u6cd5\u5f8b\u8d23\u4efb <\/p>\n<p>\u4e2a\u4eba\u7f51\u7ad9: http:\/\/txj.shell.tor.hu<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PowerShell\u8bed\u8a00\u5141\u8bb8\u901a\u8fc7\u4e00\u4e2a\u5b57\u9762\u7c7b\u578b\uff08type Literals\uff09\u6765\u8bbf\u95ee\u7c7b\u578b\uff0c\u5b83\u662f\u7528\u62ec\u53f7\u62ac\u8d77\u7684\u7c7b\u578b\u540d\uff0c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[43],"tags":[],"class_list":["post-33107","post","type-post","status-publish","format-standard","hentry","category-powershell"],"_links":{"self":[{"href":"https:\/\/www.fuhaijun.com\/index.php?rest_route=\/wp\/v2\/posts\/33107"}],"collection":[{"href":"https:\/\/www.fuhaijun.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fuhaijun.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fuhaijun.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fuhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=33107"}],"version-history":[{"count":1,"href":"https:\/\/www.fuhaijun.com\/index.php?rest_route=\/wp\/v2\/posts\/33107\/revisions"}],"predecessor-version":[{"id":33809,"href":"https:\/\/www.fuhaijun.com\/index.php?rest_route=\/wp\/v2\/posts\/33107\/revisions\/33809"}],"wp:attachment":[{"href":"https:\/\/www.fuhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=33107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fuhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=33107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fuhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=33107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}