//// tab | Linux, macOS

Stel dat je Python installeert en het komt terecht in de map `/opt/custompython/bin`.

Als je kiest om de `PATH` omgevingsvariabele bij te werken, zal het installatieprogramma `/opt/custompython/bin` toevoegen aan de `PATH` omgevingsvariabele.

Dit zou er zo uit kunnen zien:

```plaintext
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/custompython/bin
```

//// tab | Linux, macOS

Let's say you install Python and it ends up in a directory `/opt/custompython/bin`.

If you say yes to update the `PATH` environment variable, then the installer will add `/opt/custompython/bin` to the `PATH` environment variable.

It could look like this:

```plaintext
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/custompython/bin
```

////

//// tab | Windows

Digamos que você instala o Python e ele acaba em um diretório `C:\opt\custompython\bin`.

Se você disser sim para atualizar a variável de ambiente `PATH`, o instalador adicionará `C:\opt\custompython\bin` à variável de ambiente `PATH`.

```plaintext

LABEL description="Istio CNI plugin installer."

ARG TARGETARCH
COPY ${TARGETARCH:-amd64}/istio-cni /opt/cni/bin/istio-cni
COPY ${TARGETARCH:-amd64}/install-cni /usr/local/bin/install-cni

ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/cni/bin
WORKDIR /opt/cni/bin

            }

            else -> {
                profilerParam("async-profiler")
                param("env.FG_HOME_DIR", "/opt/FlameGraph")
                param("env.PATH", "%env.PATH%:/opt/swift/4.2.3/usr/bin:/opt/swift/4.2.4-RELEASE-ubuntu18.04/usr/bin")
                param("env.HP_HOME_DIR", "/opt/honest-profiler")
            }
        }

        param("env.PERFORMANCE_DB_PASSWORD_TCAGENT", "%performance.db.password.tcagent%")

    Note over client,operation: Response is already sent, can't change it anymore
    opt Tasks
        operation -->> tasks: Send background tasks
    end
    opt Raise other exception
        tasks -->> dep: Raise other exception
    end
    Note over dep: After yield
    opt Handle other exception
        dep -->> dep: Handle exception, can't change response. E.g. close DB session.
    end
```

        "Linux",
        androidHome = "/opt/android/sdk",
        jprofilerHome = "/opt/jprofiler/jprofiler11.1.4"
    ),
    WINDOWS(
        "Windows",
        androidHome = """C:\Program Files\android\sdk""",
        jprofilerHome = """C:\Program Files\jprofiler\jprofiler11.1.4""",
        perfTestWorkingDir = "P:/",
    ),
    MACOS(
        "Mac",
        androidHome = "/opt/android/sdk",

	ReadinessEndpoint  = "/readyz"
	ReadinessPort      = "8000"
	ServiceAccountPath = "/var/run/secrets/kubernetes.io/serviceaccount"
)

// Exposed for testing "constants"
var (
	CNIBinDir     = "/opt/cni/bin"
	HostCNIBinDir = "/host/opt/cni/bin"
	// Well-known subpath we will mount any needed host-mounts under,
	// to preclude shadowing or breaking any pod-internal mounts
	HostMountsPath = "/host"

func (db *PreparedStmtDB) BeginTx(ctx context.Context, opt *sql.TxOptions) (ConnPool, error) {
	if beginner, ok := db.ConnPool.(TxBeginner); ok {
		tx, err := beginner.BeginTx(ctx, opt)
		return &PreparedStmtTX{PreparedStmtDB: db, Tx: tx}, err
	}

	beginner, ok := db.ConnPool.(ConnPoolBeginner)
	if !ok {
		return nil, ErrInvalidTransaction
	}

	connPool, err := beginner.BeginTx(ctx, opt)
	if err != nil {
		return nil, err
	}

            when (os) {
                Os.WINDOWS -> param("env.PATH", "%env.PATH%;C:/Program Files/7-zip")
                else -> param("env.PATH", "%env.PATH%:/opt/swift/4.2.3/usr/bin:/opt/swift/4.2.4-RELEASE-ubuntu18.04/usr/bin")
            }
        }
        failureConditions {
            // We have test-retry to handle the crash in tests
            javaCrash = false