demo.ps1
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# 1. Hello World in PowerShell # .Silent cls # 'Hello world' is a really simple script to write in PowerShell. # You just put it in quotes. "hello world" # This is because in PowerShell, unassigned output is returned. # 2. PowerShell and Objects # Everything in PowerShell is an object. # So I can tell you how many characters there are in hello world just by getting the .Length "hello world".Length # 3. Basic Math in PowerShell <# Math in PowerShell is also really straightforward. #> 1 + 1 9 / 5 1 + 1 + 2 + 1 # 4. Basic string formatting with PowerShell # You can use .NET string formatting with PowerShell by using the -f operator '{0:c}' -f 1.99 # The format string in on the left, and the value you're formatting is on the right. # '{0:c}' means 'format as currency' # The value we are formatting is 1.99. # We can also use the .NET type [string] to do the formatting: [string]::Format("{0:c}", 1.99) # You can do some fun things with PowerShell, like multiply strings to repeat them. '$' * 10 # 5. The Object Pipeline (is money) # A cool and unique part of PowerShell is the object pipeline # You can send every object to a command by 'Piping' the object. # You can pipe as many commands together as you would like. # So you basically program in PowerShell by connecting the dots. # To display information in a color, we use the built in command Write-Host. # So let's see how much money we can make by connecting the dots. # The joke for a long time has been PowerShell + a pulse is $50/hr. '$' * 50 | Write-Host -ForegroundColor Green '{0:c}' -f 50 # 40 hours a week '$' * 50 * 40 | Write-Host -ForegroundColor Green '{0:c}' -f (50 * 40) # 52 weeks a year '$' * 50 * 40 * 52 | Write-Host -ForegroundColor Green '{0:c}' -f (50 * 40 * 52) # Learn PowerShell. # Write Scripts. # Make Money. |