Переменные окружения могут быть полезны для работы с **настройками** приложений, как часть **установки** Python и т.д.

## Создание и использование переменных окружения { #create-and-use-env-vars }

Можно **создавать** и использовать переменные окружения в **оболочке (терминале)**, не прибегая к помощи Python:

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console

/*
 * Copyright 2012-2025 CodeLibs Project and the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

        // Create a new instance before each test
        smbComNegotiate = new SmbComNegotiate();
    }

    /**
     * Test the constructor of SmbComNegotiate.
     * It should initialize the command and flags2 with default values.
     */
    @Test
    void testConstructor() {
        // Verify that the command is set to SMB_COM_NEGOTIATE
        assertEquals(ServerMessageBlock.SMB_COM_NEGOTIATE, smbComNegotiate.command,

 * limitations under the License.
 */
package okhttp3.internal.http

import java.io.IOException
import okhttp3.Headers
import okhttp3.Request
import okhttp3.Response
import okhttp3.Route
import okhttp3.internal.connection.RealCall
import okio.Sink
import okio.Socket
import okio.Source

/** Encodes HTTP requests and decodes HTTP responses. */
interface ExchangeCodec {

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.lifecycle.internal;

import java.util.List;

import org.apache.maven.execution.MavenSession;
import org.apache.maven.execution.ProjectDependencyGraph;
import org.apache.maven.project.MavenProject;

/**
 * A build context that matches a Maven project to a given task segment, and the session to be used.
 * <p>

/**
 * Service interface for managing Maven toolchains, which provide abstraction for different
 * build tools and environments.
 *
 * <p>A toolchain represents a specific build tool configuration (e.g., JDK, compiler) that can be
 * used during the Maven build process. This service allows for retrieving, storing, and managing
 * these toolchains.</p>
 *
 * @since 4.0.0
 */
@Experimental

    /**
     * Deletes documents from the specified index based on the given query.
     *
     * @param client the OpenSearch client to use for executing the query and delete operations
     * @param settings the settings for the suggest feature, including timeouts and scroll settings
     * @param index the name of the index from which documents should be deleted
     * @param queryBuilder the query used to identify documents to delete

/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * <p>
 * This class extends {@link HtmlTransformer} and overrides the {@link #storeData(ResponseData, ResultData)} method
 * to parse the HTML content, evaluate XPath expressions, and generate the XML output.
 * </p>
 * <p>
 * The class supports various XPath result types, including BOOLEAN, NUMBER, STRING, NODESET, and NODE.

/*
 * Copyright 2012-2025 CodeLibs Project and the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,