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実行中のadb server/Unity組込み/Android Studio/環境変数からadbを探して実行するPowerShell関数


PCに複数のadbやAndroid SDKがインストールされている時に起動中のadb serverと違うバージョンのadbを実行するとadb serverが再起動してしまいます。そのため、なるべく同じバージョンのadbを実行するPowerShellの関数を作りました。



  1. 実行中のadb server
  2. 実行中のUnityから一緒にインストールしたAndroid SDKのadb
  3. Android StudioからインストールしたAndroid SDKのadb
  4. 環境変数PATHのadb
function FindAdb() {
    # find from process list
    $adbPath = Get-Process -Name "adb" -ErrorAction Ignore |
        Sort-Object Id |
        Select-Object -First 1 -ExpandProperty Path
    if ($null -ne $adbPath) {
        return $adbPath

    # find from Unity in process list
    $adbPath = Get-Process -Name "Unity" -ErrorAction Ignore |
        Select-Object @{
                Join-Path (Split-Path $_.Path) "Data" "PlaybackEngines" "AndroidPlayer" "SDK" "platform-tools" "adb.exe"
        } |
        Where-Object { Test-Path -Path $_.adb -PathType Leaf } |
        Select-Object -First 1 -ExpandProperty adb
    if ($null -ne $adbPath) {
        return $adbPath

    # find from LOCALAPPDATA
    $adbPath = Join-Path $env:LOCALAPPDATA "Android" "Sdk" "platform-tools" "adb.exe"
    if (Test-Path -Path $adbPath -PathType Leaf) {
        return $adbPath

    # find from path
    $adbPath = Get-Command -Name "adb" -CommandType Application,ExternalScript -ErrorAction Ignore |
        Select-Object -First 1 -ExpandProperty Source
    if ($null -ne $adbPath) {
        return $adbPath

    # not found
    return "adb.exe"

function ExecAdb() {
    $adb = FindAdb
    & "$adb" $args
Set-Alias -Name adb -Value ExecAdb
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