A PowerShell Cheat Sheet

PowerShell-CheatSheet.md

PowerShell Cheat Sheet

Variables

• Always have a dollar sign ($) before them.
• Example below:

$numberofcmdlets = (get-command).count

cmdlet's:

• Write-Host simply writes text to the screen of the machine hosting the PowerShell session. Example below:

Write-Host "Whatever text I want, as long as it is inside double quotes."

• But you can integrate variables with Write-Host. You just call them with the dollar sign notation and work them right into your text. Example below:

Write-Host "There are $numberofcmdlets commands available for use on this system."

Conditionals

In PowerShell, your normal conditional symbols like >, <, >=, <=, == are denoted in the table below:

Conditional	PS
Greater Than	-gt
Less Than	-lt
Greater Than or Equal	-ge
Less Than or Equal	-le
Equal Too	-eq
Not Equal Too	ne
Case Sensitive Ex.	-Ceq

Other Comparison Operarators are:

-Like -NotLike -Match -NotMatch -Contains -NotContains -In -NotIn -Replace

Looping:

• The if/then mechanism; in PowerShell lingo, this is called the "construct."

  • If I wanted to have PowerShell display whether 10 was greater than 5. Example below:

  If (10 –gt 5)
   {
   Write-Host "Yes"
   }

• A loop with an elseif:

    If (10 –gt 11)
    {
    Write-Host "Yes"
    } elseif (11 –gt 10)
    {
    Write-Host "This time, yes"
    }elseif (20 –gt 40)
    {
    Write-Host "Third time was a charm"
    } else {
    Write-Host "You're really terrible at math, aren’t you?"
    }

A good resource for PowerShell looping and other things can be found here.