My current PowerShell profile!

Microsoft.PowerShell_profile.ps1

#PsGet. May require manually installing each of these...

Import-Module PsGet
Import-Module PowerLS
Import-Module FindString

#Unix like ls:
Remove-Item alias:ls

Set-Alias -Name ls -Value PowerLS -Option AllScope
Set-Alias -Name lls -Value PowerLS -Option AllScope
Set-Alias -Name grep -Value FindString -Option AllScope

# Turn off that silly beep
Set-PSReadlineOption -BellStyle None

# Change prompt
function prompt
{
    Write-Host ("(") -nonewline -foregroundcolor Cyan
    Write-Host ($(Get-Branch)) -nonewline -ForegroundColor DarkYellow
    Write-Host (")") -nonewline -foregroundcolor Cyan
    Write-Host ("[") -nonewline -foregroundcolor Cyan
    Write-Host ($(Get-Location)) -nonewline -foregroundcolor Yellow
    Write-Host ("]") -nonewline -foregroundcolor Cyan
    Write-Host ("`r`n|") -nonewline -foregroundcolor Yellow
    Write-Host ("λ") -nonewline -foregroundcolor DarkRed
    Write-Host ("> ") -nonewline -foregroundcolor Yellow
    return " "
}

# Aliases
$PSRC = "~\Documents\WindowsPowerShell\Microsoft.PowerShell_profile.ps1"

function vscode($File) {
    code -a $File
}
Set-Alias -Name vim -Value vscode # I'm too used to using vim for everything...

# Returns the current git branch, or nothing if not inside a git repo
function Get-Branch() {
    return $(git rev-parse --abbrev-ref HEAD)
}

#Shows all the files that have changed since the start of the current branch
function Show-Changed-Files() {
    $Branch = Get-Branch
    git diff --name-only $Branch $(git merge-base $Branch master)
}

# Unix which replacement
Set-Alias which Get-Command

# Shortcut for windows diff
function Show-Difference($File1, $File2) {
    Compare-Object (Get-Content $File1) (Get-Content $File2)
}
Remove-Item -Force alias:diff
Set-Alias -Name diff -Value Show-Difference