Here, if block checks if variable has a truthy value, so it will go to elseif block even if value is 0, $false, an empty String, an empty array, and not just $null, and that’s the reason, we have put explicit check in elseif statement if variable is $null. 5. Using Null-Co...
I run the script, and the script breaks before the value “localhost” is assigned to the$cnvariable. I then check the value of the$cnvariable; nothing is displayed because the variable has not been created. Next, I use theLcommand to see the code, and I see the script is on the fi...
variable, type the script's path and file name. If you enter the exact name of a help article, `Get-Help` displays the article contents. If you enter a word or word pattern that appears in several help article titles, `Get-Help` displays a list of the matching titles. If you enter...
ComputerName Verbose Debug ErrorAction WarningAction InformationAction ErrorVariable WarningVariable InformationVariable OutVariable OutBuffer PipelineVariable WhatIf Confirm 参数验证 尽早验证输入。 如果没有有效输入则无法完成,不允许代码继续执行。 参数变量必须始终指定数据类型。 在下面的示例中,String被指定为Comput...
that any functions, aliases, and variables that the script creates are added to the current scope, overriding existing ones. Parameters declared by the script become variables. Parameters for which no value has been given become variables with no value. However, the automatic variable$argsis ...
Set-Variable Cmdlet Sets the value of a variable. Creates the variable if one with the requested name does not exist. Remove-Variable Cmdlet Deletes a variable and its value. Clear-Variable Cmdlet Deletes the value of a variable. 示例: ...
Detect if BitLocker Protection Status is 0, enable Detect if variable has been previously declared? Detect integrated (onboard) GPU using WMI Detect mapped drive path and disconnect if exists determine 32 or 64bit OS? Determine if service exists? Dialog box - execute a command if no button is...
Change the value of the variable $strMatch from "CN=<your CA here>" to "CN=..."# For testing purposes the value of the variable $expiringDays can be changed to a positive integer# Don't change the $results variable##===# Define Variables$results= @()$expiringDays=0$strMatch="CN=<...
$server='Server01.Domain01.Fabrikam.com'Set-ItemWSMan:\localhost\Client\TrustedHosts-Value$server To add a computer name to an existing list of trusted hosts, first save the current value in a variable. Then set the value to a string containing a comma-separated list that includes t...
SetEnv directives in ssh_config and sshd_config are now first-match-wins to match other directives. Previously if an environment variable was multiply specified the last set value would have been used. ssh-keygen -A (generate all default host key types) will no longer generate DSA keys. ...