これらの環境変数のひとつに、 `PATH` 変数があります。

/// tip | 豆知識

`PATH` 変数についての詳細は [環境変数](environment-variables.md#path環境変数){.internal-link target=_blank} を参照してください。

///

仮想環境を有効にすると、その仮想環境のパス `.venv/bin` （LinuxとmacOS）、あるいは `.venv\Scripts` （Windows）が `PATH` 変数に追加されます。

その環境を有効にする前の `PATH` 変数が次のようになっているとします。

//// tab | Linux, macOS

```plaintext

  }

  /** Returns a root path for the file system. */
  private static File root() {
    return File.listRoots()[0];
  }

  /** Returns a {@code File} object for the given path parts. */
  private static File file(String first, String... more) {
    return file(new File(first), more);
  }

  /** Returns a {@code File} object for the given path parts. */

👆 🚫 ✔️ 🚮 🗃 🌐 🔖 👈 👆 ⚙️.

///

### ⚙️ 👆 🔖

⚙️ `tags` 🔢 ⏮️ 👆 *➡ 🛠️* (& `APIRouter`Ⓜ) 🛠️ 👫 🎏 🔖:

{* ../../docs_src/metadata/tutorial004.py hl[21,26] *}

/// info

✍ 🌅 🔃 🔖 [➡ 🛠️ 📳](path-operation-configuration.md#_3){.internal-link target=_blank}.

///

### ✅ 🩺

🔜, 🚥 👆 ✅ 🩺, 👫 🔜 🎦 🌐 🌖 🗃:

<img src="/img/tutorial/metadata/image02.png">

### ✔ 🔖

        // only show msg if a change is actually taking place
        if (!replacement.getScope().equals(artifact.getScope())) {
            String msg = indent + artifact + " (applying system path: " + replacement.getFile() + ")";
            logger.debug(msg);
        }
    }

        }
    }

    private static void createFileConfig() {
        final Map<String, Object> requestBody = new HashMap<>();
        final String paths = "file:" + getTestDataPath();
        requestBody.put("name", NAME_PREFIX + "FileConfig");
        requestBody.put("paths", paths);
        requestBody.put("excluded_paths", ".*\\.git.*");
        requestBody.put("max_access_count", 100);
        requestBody.put("num_of_thread", 1);

        // Create a modified NetShareEnum to test encoding exception path
        NetShareEnum testEnum = new NetShareEnum(realConfig) {
            @Override
            protected int writeParametersWireFormat(byte[] dst, int dstIndex) {
                // Simulate the encoding exception path
                return 0;
            }
        };

        byte[] dst = new byte[256];

	if len(s) > len(b) {
		f.err = ErrFieldTooLong
	}
	copy(b, s)
	if len(s) < len(b) {
		b[len(s)] = 0
	}

	// Some buggy readers treat regular files with a trailing slash
	// in the V7 path field as a directory even though the full path
	// recorded elsewhere (e.g., via PAX record) contains no trailing slash.
	if len(s) > len(b) && b[len(b)-1] == '/' {
		n := len(strings.TrimRight(s[:len(b)-1], "/"))

import java.util.List;
import java.util.Map;
import java.util.WeakHashMap;

import org.apache.maven.model.Model;
import org.apache.maven.project.ProjectBuilderConfiguration;
import org.apache.maven.project.path.PathTranslator;
import org.codehaus.plexus.interpolation.InterpolationPostProcessor;
import org.codehaus.plexus.interpolation.Interpolator;
import org.codehaus.plexus.interpolation.StringSearchInterpolator;

        JAVA="$JAVA_HOME/bin/java"
    else
        JAVA=`which java`
    fi

    if [ ! -x "$JAVA" ]; then
        echo "Could not find any executable java binary. Please install java in your PATH or set JAVA_HOME"
        exit 1
    fi
}

start() {
    checkJava
    [ -x $exec ] || exit 5

    # Ensure that the PID_DIR exists (it is cleaned at OS startup time)

func configureServerHandler(endpointServerPools EndpointServerPools) (http.Handler, error) {
	// Initialize router. `SkipClean(true)` stops minio/mux from
	// normalizing URL path minio/minio#3256
	router := mux.NewRouter().SkipClean(true).UseEncodedPath()

	// Initialize distributed NS lock.
	if globalIsDistErasure {
		registerDistErasureRouters(router, endpointServerPools)
	}