lineNumber = 0; // Read in a single block (line in case of a file) // from the object. IList items = reader.Read(1); // Read and process one block(line) at a time until // no more blocks(lines) exist. while (items != null && items.Count == 1) { // Increment t...
The variable $_ represents the array values as each object is sent down the pipeline. The Get-Content cmdlet uses the Path parameter to specify the LineNumbers.txt file and displays the content in the PowerShell console.Example 2: Limit the number of lines Get-Content returnsThis command ...
Now I need to combine the ability to read service names from a file with the Set-Service cmdlet, and that's where the powerful pipeline capabilities of Windows PowerShell come into play. With the pipeline, the output from one cmdlet can be passed as the input to a second cmdlet. The pi...
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PowerShell is a complex and comprehensive platform that can perform a vast array of functions and support sophisticated enterprise-class tasks -- many of which can be automated through scripts and custom cmdlet creation, or programming. Consequently, most system administrators must eventually be profici...
Script level parameters can be accessed in two ways. The first is with the $args variable which is a built-in variable that is auto-populated with an array of objects containing the values passed to the script. --- Begin script foo.ps1 --- Write...
By default in powershell outputs of commandlets are formatted line per line (as an array of strings). When your command generates 10 lines of output and you use GUI output, 10 message boxes will appear each awaiting for an OK. To prevent this pipe your commandto the comandlet Out-String...
We just thought that was kind of cool. That brings us to these three lines of code: Copy $objForm.KeyPreview = $True $objForm.Add_KeyDown({if ($_.KeyCode -eq "Enter") {$x=$objTextBox.Text;$objForm.Close()}}) $objForm.Add_KeyDown({if ($_.KeyCode -eq "Escape") {$obj...
From there we set the TopMost property; this ensures that when we show the form the form will appear on top of any other windows on the screen: Copy $objForm.Topmost = $True And then we use these two lines of code to actually bring up our calendar: Copy $objForm.Add_Shown({$...
This command will strip out any lines that are blank or have nothing by white space, and trim leading and trailing spaces. The optimized text is then written back to the pipeline. Optionally, you can specify a property name. This can be useful when your text file is a list of computer ...