Tip: You can create an endless loop using while or for :
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# Solution 1 while ($true) { Test-Connection -ComputerName $computer -Quiet } # Solution 2 for ( ; ; ) { Test-Connection -ComputerName $computer -Quiet } |
Tip: The automatic variable $PSBoundParameters is a hashtable containing the parameters passed to a script or a function. Example:
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function Test-ExtensionFile { Param ( [Parameter(Mandatory = $true)] [string[]]$Path, [switch]$Extension ) [System.IO.Path]::HasExtension($Path) if ($PSBoundParameters.ContainsKey('Extension')) { Write-Output -InputObject "Extension : $([System.IO.Path]::GetExtension($Path))" } } Test-ExtensionFile -Path 'C:\Windows\notepad.exe' -Extension |
Tip: The difference between Break and Continue statements: Continue : the loop continues but skips just the current iteration. Break : exits a loop or a switch statement. Note: to exit a function, use the return statement.
Tip: You can set some default values for parameters by using the automatic variable $PSDefaultParameterValues. This preference variable is a hashtable and have some methods such as : Add, Clear, GetEnumerator, Remove, … For example: – if you want to have by default -Count 1 and -Quiet $true for Test-Connection. – if you want to set a… Read More »
Tip: Convert String <> Datetime Datetime > String
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# Solution 1 $datetimeToString = '{0:MM/dd/yy}' -f (Get-Date '07/15/2015') # Solution 2 $datetimeToString = (Get-Date '07/15/2015').ToShortDateString() |
String > Datetime
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# Solution 1 $stringToDatetime1 = '07/15/2015' | Get-Date $stringToDatetime = '07-15-2015' | Get-Date # Solution 2 $stringToDatetime2 = [Datetime]::ParseExact('07/15/2015', 'MM/dd/yyyy', $null) # Solution 3 $stringToDatetime3 = [Datetime]'7/15/2015' |
MSDN: DateTime.ParseExact Method
Tip: Opening a new tab is useful to open a new clean environment or to establish a session on a remote computer. To open a local Powershell tab : Control + T To open a remote Powershell tab : Control + Shift +R To rename a tab where you are : $psise.CurrentPowerShellTab.DisplayName = 'Dev' To rename… Read More »