Comparison Operations in Windows PowerShell Scripts

Q

How to use comparison operations in Windows PowerShell scripts? Can I write "$a > 0"?

✍: FYIcenter.com

A

No, you can not use "$a>0" as a comparison operation in Windows PowerShell scripts. You must use PowerShell comparisonoperators given below:

 -eq             Equal
 -ne             Not equal
 -ge             Greater than or equal
 -gt             Greater than
 -lt             Less than
 -le             Less than or equal

Here are some examples of how to use PowerShell comparisonoperators:

$a = 2
$b = 3
"Is a < b? "+($a -lt $b)
"Is a <= b? "+($a -le $b)
"Is a > b? "+($a -gt $b)
"Is a >= b? "+($a -le $b)
"Is a == b? "+($a -eq $b)
"Is a != b? "+($a -ne $b)

⇒ Logical Operations in Windows PowerShell Scripts

⇐ Invoke Object Methods in Windows PowerShell Scripts

⇑ Introduction of Windows PowerShell Script

⇑⇑ Windows PowerShell Tutorials

2016-10-30, ∼2841🔥, 0💬

💬 2023-12-17 FYIcenter.com: @Fred, You need to use System.Drawing API to those properties in a JPG file.

💬 2023-12-12 Fred V: Where can I find the files property names -as caption and title of a jpg... Thanks !

Add Comments in Windows PowerShell Scripts
How to add comments in Windows PowerShell scripts? There are two primary ways to add comments in Windows PowerShell scripts: 1. Using # in the middle of line - If you use the "#" sign in the middle of a line, everything starts from "#" to the end of line is considered as a comment. For example: Writ... 2016-11-02, ∼4469🔥, 0💬

Out-Host - Standard Output in Windows PowerShell Scripts
How to use the "Out-Host" cmdlet in Windows PowerShell scripts? I want to output information the standard output channel. The "Out-Host" cmdlet sends output to the Windows PowerShell host for display. The host displays the output to the PowerShell console. Because "Out-Host" is the default cmdlet, y... 2016-10-30, ∼4062🔥, 0💬

Running Scripts Disabled in Windows PowerShell
Why am I getting the "running scripts is disabled on this system" error when I try to run a Windows PowerShell script? If your system is not configured to run Windows PowerShell script, you will get an error when you type in the script file name in Windows PowerShell command line. For example: PS C:... 2016-11-02, ∼3740🔥, 0💬

Invoke Object Methods in Windows PowerShell Scripts
How to invoke methods of an object in Windows PowerShell scripts? I know the method name in Windows PowerShell scripts. If you know the method name of an object, you can invoke and run the method using the "." operator. For example, if you run the following script: $today = Get-Date $tomorrow = $tod... 2016-11-02, ∼3175🔥, 0💬

Console Input and Output in Windows PowerShell Scripts
How to manage console input and output in Windows PowerShell scripts? I want to write a PowerShell script that "talks" with the user. You need to use the "Write-Host" and "Read-Host" cmdlets to manage console input and output. The "Write-Host" cmdlet allows to write information to the console with s... 2016-10-30, ∼3147🔥, 0💬

If-Else Conditions in Windows PowerShell Scripts
How to use if-else conditions in Windows PowerShell scripts? PowerShell script supports the following if-else code block to help you to perform tasks depending on logical conditions: If (conditin1) { task1 } Elseif (condition2) { task2 ... } Else { other-task } Here is a sample script on how to use ... 2016-10-30, ∼3103🔥, 0💬

Logical Operations in Windows PowerShell Scripts
How to use logical (or Boolean) operations in Windows PowerShell scripts? Can I write "$a > 0 AND $a < 10"? No, you can not use "$a > 0 AND $a < 10" as a logical operation in Windows PowerShell scripts. You must use PowerShell logical operators given below: -and Logical A... 2016-10-30, ∼3047🔥, 0💬

Execution Loops in Windows PowerShell Scripts
How to write execution loops in Windows PowerShell scripts? I want to repeat some code multiple times. There are several ways to write execution loops in Windows PowerShell scripts. 1. "While {...}" loop - For example: $today = Get-Date "Today is "+$today.DayOfWeek $next = $today.AddDays(1) While ($... 2016-10-29, ∼3043🔥, 0💬

Assign Object to Variable in Windows PowerShell Scripts
How to assign an object to a variable in Windows PowerShell scripts? The output object of a cmdlet can be assigned to a variable using the assignment operator "=". Remember, variable names must start with the "$" sign. So here is an example of assign a DateTime object to a variable: $now = Get-Date ... 2016-11-02, ∼2931🔥, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.