Multiple conditions with elseif ^. The following examples illustrate how to use the if-else statement in PowerShell: Example1: In this example, we can check that the number in the variable is even or odd. The reason for including this example is that -Or follows the same pattern as PowerShell’s -And.. PowerShell Create and read XML file. You can do nearly anything using PowerShell as Microsoft has put in a lot of effort in designing PowerShell cmdlets for almost all technologies, which include interacting with Windows components, Office 365, and Azure clouds.There are a few logical operators in the PowerShell scripting library that can be used to take an action based on a condition. This gives us the idea that the PowerShell executes what is inside the curly brackets depending on whether the condition evaluates to true or not. # Simple PowerShell ElseIf Example $Number = -10 +10 if ($Number -gt 0) { "$Number is bigger than zero" } ElseIf ($Number -lt 0) { "$Number is negative" } Else { "This number appears to be zero" } Example 4: Check If a Service is Installed and Working For scripts that require precise flow control you could incorporate PowerShell’s -And, the benefit is that your test could now include multiple conditions. PowerShell: if statement. First, lets add the condition that tests whether a folder does NOT exist. However, if the condition is false, PowerShell will exit. Syntax if (condition) { commands_to_execute } [ elseif (condition2) { commands_to_execute } ] [ else { commands_to_execute } ] Key Condition An expression that will evaluate to true or false, often utilising one or more comparison operators. The catch is noticing what comes just before: is it just parentheses or is the opening parenthesis preceded by a dollar sign $ or at-sign @ ? This is seen in the DemoIfElse.vbs script: DemoIfElse.vbs. For example, if the result was TRUE, “!” turns it to FALSE. When we break down the script, we can see that there are two condition blocks. We can extend this idea to complex conditions in our upcoming posts. The command says if “F:\PS If\PowerShell Folder 1” DOES NOT exist, return TRUE. Why? We look at If, ElseIf, and If and how you can get the most out of. Then press Enter. From the result, you will notice that the command only created PowerShell-Folder as it did not exist. Finally, the third example covers how to use multiple conditions. Else-if Statement This type of statement is also known as ' Else-if ' ladder. We can reverse this command by simply adding a “!” before () block. Previous Page. Understanding If Else Statements in PowerShell. While this script is designed to test the tiny -Or syntax, it has lots of extraneous code which changes the startupType to manual. If a variable already has a boolean value, it is redundant to compare it to one of the two boolean constants. It is a rather succinct way of writing if/else type logic constructs. This example is a continuation of the previous example. The if statement conditionally does or does not execute sets of other statements. The logical condition starts with IF and ends with “}”. Syntax. $CarColor = 'Blue' if ($CarColor -eq 'Blue') { 'The car color is blue' } else { 'The car color is not blue' } At first glance you might not think there’s anything wrong with it. Each paragraph in a command syntax diagram represents a valid form of the command. If-Else Statement When we need to execute the block of statements either when the condition is true or when the condition is false, we must use the if-else statement. The syntax of an if...else is as follows: I believe I have Powershell version 4. I hope I have been able to simplify it with this guide. I will use the New-Item Powershell cmdlet (command) to create the folder. Tab Completion for Cmdlets, Filenames & Variables. This is otherwise known as conditional logic. We learned how to execute the scripts based on whether the number is even, odd or zero. Powershell - Nested If Else Statement. PowerShell – ‘While’ Loop Statement Posted on February 10, 2017 January 29, 2018 by Adam Fowler There’s a lot of different ways to loop commands in PowerShell, and here’s one I just learnt (thanks Nathan Kewley for spending the time talking me through this! If it’s true, the code covered by the “if” statement will get executed. It is a rather succinct way of writing if/else type logic constructs. Using google I was able to construct a script but it's not quite working as intended. We reversed the output of the condition test, (1 -gt 2). We can make use of the else if statement appropriately here because we want to check if the input number is zero or not for no reason. The scripts are meant to be executed when the condition is true. The output is “It is even” as 6 is an even number. Appending a "c" you can force PowerShell to compare as "case-sensitive." Let me explain to you a real time situation where you would need to write else if. To make it easy, I will just add a simple PowerShell command to the block. # PowerShell If statement to check whether a service is installed Clear-Host $Name = "Print Spooler" $Service = Get-Service -display $Name -ErrorAction SilentlyContinue If (-Not $Service) {$Name + " is not installed on this computer."} If (condition1 -And condition2) {Do stuff} More; Cancel; New; Replies 3 replies Subscribers 12 subscribers Views 19163 views Users 0 members are here PowerShell Training; PowerShell script; PowerShell; Options Share; More; Cancel; Related If statement in foreach loop. Usually, an if-else construct is used to test conditions in PowerShell scripts. Working in PowerShell, there will be times that you need to perform some sort of comparison to determine what kind of action should take place. Flowchart of If-Else Statement Examples. The… We can use the powershell’s like operator with wildcard character to check if a string contains a word or another string with case-sensitive and case-insensitive.. This section puts it together with examples. This is seen in the DemoIfElse.vbs script: DemoIfElse.vbs. Before we add this code into the If Syntax, lets look at the If Syntax one more time: So far we have replaced “Condition is true” with “Test-Path ! In this video, we do an introduction to using the PowerShell If statement and all of the nooks and crannies that go along with it. Working in PowerShell, there will be times that you need to perform some sort of comparison to determine what kind of action should take place. When the first condition block is false, the second condition block is evaluated and depending on it being true or false, the corresponding script block is executed. (“F:\PS If\PowerShell Folder 1″)”. if () {} [elseif () {}] [else {}] When you run an If statement, PowerShell evaluates the conditional expression as true or false. In this video, we do an introduction to using the PowerShell If statement and all of the nooks and crannies that go along with it. In the final part of this first example, lets combine all the various parts of the If statement. Writing multiple if statements are not a good idea if the condition is already satisfied. It is always legal to nest if-else statements which means you can use one if or elseif statement inside another if or elseif statement. 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