Changing the Powershell prompt

I wanted a way to change the powershell prompt, in particular to:
- Display the current path in the Shell window
- Change the prompt to "[LineNumber]:"
- Show the stcck level when "pushd" is used

Then a colleague showed me this.

Add the following function to your current profile - it's an override for the prompt method:

function prompt {

#the old script...

#function prompt { "$" }



# FIRST, make a note if there was an error in the previous command

$err = !$?



# Make sure Windows and .Net know where we are (they can only handle the FileSystem)

[Environment]::CurrentDirectory = (Get-Location -PSProvider FileSystem).ProviderPath

# Also, put the path in the title ... (don't restrict this to the FileSystem

$Host.UI.RawUI.WindowTitle = "> {0} ({1})" -f $pwd.Path,$pwd.Provider.Name



# Determine what nesting level we are at (if any)

$Nesting = "$([char]0xB7)" * $NestedPromptLevel



# Generate PUSHD(push-location) Stack level string

$Stack = "+" * (Get-Location -Stack).count



# my New-Script and Get-PerformanceHistory functions use history IDs

# So, put the ID of the command in, so we can get/invoke-history easier

# eg: "r 4" will re-run the command that has [4]: in the prompt

$nextCommandId = (Get-History -count 1).Id + 1

# Output prompt string

# If there's an error, set the prompt foreground to "Red", otherwise, "Yellow"

if($err) { $fg = "Red" } else { $fg = "Yellow" }

# Notice: no angle brackets, makes it easy to paste my buffer to the web

Write-Host "[${Nesting}${nextCommandId}${Stack}]:" -NoNewLine -Fore $fg



return " "

}

The easiest way to do this is:
1. In PS type "$profile" this will show you the location of the current active profile
2. Open that file in notepad and paste the function above into it
3. In PS type ".$profile" to reload the altered profile