Skip to content

Instantly share code, notes, and snippets.

@chilversc
Created February 22, 2011 22:46
Show Gist options
  • Save chilversc/839599 to your computer and use it in GitHub Desktop.
Save chilversc/839599 to your computer and use it in GitHub Desktop.
PowerShell profile
function Get-HomeLocation {
# Using 'Run as administrator' does not set $Home, so try other variables as well
if ($variable:Home) {
$variable:Home
} elseif ($env:Home) {
$env:Home
} elseif ($env:UserProfile) {
$env:UserProfile
} else {
$null
}
}
function Get-HomeRelativeLocation
{
$h = Get-HomeLocation
if ($h) {
$pwd = [string] (Get-Location)
if ($pwd.StartsWith($h)) {
'~' + $pwd.Substring($h.Length)
} else {
$pwd
}
} else {
[string] (Get-Location)
}
}
function Write-LabeledPrompt ($Label)
{
if ($nestedpromptlevel -ge 1) {
'>>> '
} else {
$pwd = Get-HomeRelativeLocation
if (Test-Administrator) {
Write-Host -NoNewline -ForegroundColor Red "[Admin] "
}
if (Test-Path variable:/PSDebugContext) {
Write-Host -NoNewline -ForegroundColor DarkGreen '[DBG]:'
}
Write-Host -NoNewline -ForegroundColor DarkGreen "$Label "
Write-Host -ForegroundColor DarkYellow ('[' + $pwd + ']')
'> '
}
}
function prompt
{
Write-LabeledPrompt 'PS'
}
function Test-Administrator
{
$user = [Security.Principal.WindowsIdentity]::GetCurrent()
(New-Object Security.Principal.WindowsPrincipal $user).IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator)
}
function touch {
param([string] $filename)
New-Item -type file $filename
}
# If the file system has not had its home set (eg using run as administrator) try to set
# it using one of the other environmental variables so that commands like 'cd ~' work
if (-not (Get-PSProvider 'FileSystem').Home) {
$h = Get-HomeLocation
if ($h) {
(Get-PSProvider 'FileSystem').Home = $h
}
}
@JohnL4
Copy link

JohnL4 commented Nov 6, 2013

Beautiful. I spent WAY more time on this (Run-as-admin doesn't set $HOME or ~) at home last night than I should have. Nice to know I'm not insane. Maybe I missed the env: prefix on $UserProfile.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment