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    <p>Try this function coming from <a href="http://powershell.com/cs/" rel="nofollow">PowerShell.com</a> PowerTip it illustrate the usage of <code>Invoke-Expression</code>.</p> <pre><code>function Call { $command = $Args -join " " $command += " 2&gt;&amp;1" $result = Invoke-Expression($command) $result | %{$e=""}{ if( $_.WriteErrorStream ) {$e += $_ } else {$_} }{Write-Warning $e} } </code></pre> <p>That gives :</p> <pre><code>cd "${env:ProgramFiles(x86)}\Microsoft Visual Studio 10.0\Common7\IDE" call .\devenv.exe /command "`"File.BatchNewTeamProject C:\stuff\Project51.xml`" </code></pre> <p>--- Edit ---</p> <p>There are many things to say here. </p> <p><strong>First</strong> you can find a good help with "about" files try :</p> <p>Get-help about-*</p> <p>On the subject you are interested you've got:</p> <pre><code>Get-help about_Quoting_Rules Get-Help about_Special_Characters Get-Help about_Escape_Characters Get-Help about_Parameters </code></pre> <p><strong>Second</strong> <code>CD, DIR, MD</code> works, but they are just aliases on CmdLets which takes different arguments.</p> <p><strong>Third</strong> to get environment variable it's no longer <code>%systemroot%</code> it's <code>$env:systemroot</code>.</p> <p><strong>Fourth</strong> to start an executable file from powershell you can just type the name of the exe :</p> <pre><code>PS&gt; notepad c:\temp\test.txt </code></pre> <p>The command line is first interpreted by powerShell so now if you write :</p> <pre><code>PS&gt; "C:\Windows\System32\notepad.exe" C:\Windows\System32\notepad.exe </code></pre> <p>It just interpret it as a string. So you can use the &amp; operator and write </p> <pre><code>PS&gt; &amp; "C:\Windows\System32\notepad.exe" c:\test.txt </code></pre> <p>It works but :</p> <pre><code>PS&gt; $a = "C:\Windows\System32\notepad.exe c:\test.txt" PS&gt; &amp; $a </code></pre> <p>Fails and </p> <pre><code>PS&gt; $a = "C:\Windows\System32\notepad.exe c:\test.txt" PS&gt; Invoke-Expression $a </code></pre> <p>Works</p>
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    1. COThe above worked - but it is unsettling to have an expression eval'd to simply pass common string arguments. I'd really like to have a clearer understanding of how the PowerShell parser is interpreting these values – rather than having a “black box” like Invoke-Expression charge in to save the day. It should be noted that I’m something of a PS newb, but I’d really prefer not to guess as much as I am…
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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