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translating---geekpi
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Best 4 Command Line Download Managers/Accelerators for Linux
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============================================================
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We all very often uses download manager to download files from internet for different requirements, it’s one of the major contributor for me as well as others too. We all want a super fast download manager to complete the download as much possible, so that we can save our time and move forward for further work. There are a lot of download managers and accelerators available (GUI & CLI) which speeds up your download.
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All the download utility doing the same task but they way of handling & feature is differ like, Single threaded and multi-threaded, interactive and non-interactive. Here, we are going to list best four command line download accelerators which we uses regularly for day to day work.
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#### #1 Aria2
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[Aria2][1] is a lightweight multi-protocol & multi-source command-line download manager/utility for Linux, Windows & Mac OSX. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink. aria2 can be manipulated via built-in JSON-RPC and XML-RPC interfaces.
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It supports multi-threading and uses multiple sources/protocols to download files which really speeds up your download and complete the download as much as possible.
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It’s very lightweight and doesn’t require much memory and CPU. We can use as a BitTorrent Client because it has all the features you want in BitTorrent client.
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#### Aria2 Features
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* HTTP/HTTPS GET support
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* HTTP Proxy support
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* HTTP BASIC authentication support
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* HTTP Proxy authentication support
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* FTP support(active, passive mode)
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* FTP through HTTP proxy(GET command or tunneling)
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* Segmented download
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* Cookie support
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* It can run as a daemon process.
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* BitTorrent protocol support with fast extension.
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* Selective download in multi-file torrent
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* Metalink version 3.0 support(HTTP/FTP/BitTorrent).
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* Limiting download/upload speed
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Refer the following article for further usage of Aria2.
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[How to Install & use Aria2 in Linux][2]
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#### #2 Axel
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[Axel][3] is a lightweight download utility, it does the same thing how other accelerator does. It opens multiple connections for one file and each connections download separate file fragment to complete the download more quickly.
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Axel supports HTTP, HTTPS, FTP and FTPS protocols. It can also use multiple mirrors for single file download. So, Axel can speed up a download up to 40% (approximately, i personally realized). It’s very lightweight because no dependencies and uses very less CPU & RAM.
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Axel downloads all the data directly to the destination file, using one single thread.
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Note : There is no option to download the two file in single command
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Refer the following article for further usage of Axel.
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[How to Install & use Axel in Linux][4]
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#### #3 Wget
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[Wget][5] (formerly known as Geturl) is a Free, open source, command line downloader which is retrieving files using HTTP, HTTPS and FTP, the most widely-used Internet protocols. It is a non-interactive command line tool and Its name is derived from World Wide Web and get.
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Wget handle download pretty much good compared with other tools, even it doesn’t support multi-threading and futures included working in background, recursive download, multiple file downloads, resume downloads, non-interactive downloads & large file downloads.
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By default all the Linux Distribution included wget, so we can install easily from official repository, also we can install to windows and Mac OS too.
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Wget has been designed for robustness over slow or unstable network connections, if a download fails due to a network problem, it will keep retrying until the whole file has been retrieved. If the server supports regetting, it will instruct the server to continue the download from where it left off.
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#### Wget Features
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* Can resume aborted downloads, using REST and RANGE
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* Can use filename wild cards and recursively mirror directories
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* NLS-based message files for many different languages
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* Optionally converts absolute links in downloaded documents to relative, so that downloaded documents may link to each other locally
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* Runs on most UNIX-like operating systems as well as Microsoft Windows
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* Supports HTTP proxies
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* Supports HTTP cookies
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* Supports persistent HTTP connections
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* Unattended / background operation
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* Uses local file timestamps to determine whether documents need to be re-downloaded when mirroring
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Refer the following article for further usage of Wget.
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[How to Install & use Wget in Linux][6]
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#### #4 Curl
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[Curl][7] is similar to wget and doesn’t support multi-threading but surprisingly make the download much faster compare with wget.
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curl is a tool to transfer data from a server or to server, using one of the supported protocols (DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, TELNET and TFTP).
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The command is designed to work without user interaction. Also curl support proxy support, user authentication, FTP upload, HTTP post, SSL connections, cookies, file transfer resume, Metalink, and more. curl is powered by libcurl for all transfer-related features.
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If you specify URL without `protocol://` prefix, curl will attempt to guess what protocol you might want. For example, host names starting with “ftp.”curl will assume you want to speak FTP. If it’s not find specific protocol, then do default to HTTP.
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Refer the following article for further usage of Curl.
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[How to Install & use Curl in Linux][8]
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--------------------------------------------------------------------------------
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via: http://www.2daygeek.com/best-4-command-line-download-managers-accelerators-for-linux/
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作者：[Magesh Maruthamuthu][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.2daygeek.com/author/magesh/
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[1]:https://aria2.github.io/
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[2]:http://www.2daygeek.com/aria2-command-line-download-utility-tool/
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[3]:https://axel.alioth.debian.org/
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[4]:http://www.2daygeek.com/axel-command-line-downloader-accelerator-for-linux/
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[5]:https://www.gnu.org/software/wget/
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[6]:http://www.2daygeek.com/wget-command-line-download-utility-tool/
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[7]:https://curl.haxx.se/
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[8]:http://www.2daygeek.com/curl-command-line-download-manager/
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Linux 下 4 个最好的命令行下载管理器/加速器
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============================================================
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我们经常由于不同需求使用下载管理器从互联网下载文件，这是对我和其他人的主要贡献者之一。我们都想要一个超级快速的下载管理器来完成下载尽可能多的任务，以便我们可以节省时间来进一步地工作。这里有很多可以加速下载的下载管理器和加速器可用（GUI和CLI）。
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所有的下载工具做着同样的任务，但它们的处理和功能是不同的，单线程和多线程、交互和非交互。 在这里，我们将列出四个最好的我们日常工作使用的命令行下载加速器，。
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#### #1 Aria2
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[Aria2][1]是一个用于 Linux、Windows 和 Mac OSX 的轻量级多协议和多来源的命令行下载管理器/实用程序。它支持HTTP/HTTPS、FTP、SFTP、BitTorrent 和 Metalink。aria2 可以通过内置的 JSON-RPC 和 XML-RPC 接口操作。
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它支持多线程，并使用多个源/协议下载文件，它可以真的加速你的下载，并尽可能完成下载。
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它非常轻量级，不需要太多的内存和 CPU。我们可以使用它作为 BitTorrent 客户端，因为它有所有你想要的 BitTorrent 客户端的功能。
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#### Aria2 功能
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* HTTP/HTTPS GET支持
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* HTTP 代理支持
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* 支持 HTTP BASIC 认证
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* HTTP 代理认证支持
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* FTP 支持（主动、被动模式）
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* FTP 通过 HTTP 代理（GET 命令或隧道）
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* 分段下载
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* Cookie 支持
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* 它可以作为守护进程运行。
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* BitTorrent 协议支持与快速扩展。
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* 在含有多个文件的 torrent 中的选择性下载
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* Metalink 版本 3.0 支持（HTTP/FTP/BitTorrent）。
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* 限制下载/上传速度
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有关 Aria2 的进一步用法，请参阅以下文章。
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[如何在Linux中安装和使用 Aria2][2]
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#### #2 Axel
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[Axel][3] 是一个轻量级下载程序，它如其他加速器那样做着同样的事情。它为一个文件打开多个连接，每个连接下载单独的文件片段以更快地完成下载。
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Axel 支持 HTTP、HTTPS、FTP和 FTPS 协议。它也可以使用多个镜像下载单个文件。 所以，Axel 可以加速下载高达40％（大约，我个人认为）。 它非常轻量级，因为没有依赖和使用非常少的CPU和RAM。
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Axel 使用一个单线程将所有数据直接下载到目标文件。
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注意：没有选项可以在单条命令中下载两个文件
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有关 Axel 的更多使用，请参阅以下文章。
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[如何在 Linux 中安装和使用 Axel][4]
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#### #3 Wget
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[wget][5]（以前称为 Geturl）是一个免费的、开源的命令行下载程序，它使用HTTP、HTTPS 和 FTP 这些最广泛使用的Internet协议检索文件。它是一个非交互式命令行工具并且它的名称是从万维网派生的并获取的。
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wget 相比其他工具处理得相当好，即使它不支持多线程和包括后台工作、递归下载、多个文件下载、恢复下载、非交互式下载和大文件下载等功能。
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默认情况下，所有的Linux发行版都包含 wget，所以我们可以从官方仓库轻松安装，也可以安装到 windows 和 Mac 操作系统。
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wget 已被设计为可在慢速或不稳定的网络连接下保持鲁棒性，如果由于网络问题下载失败，它将继续重试，直到整个文件下载完成。如果服务器支持重新获取，它将指示服务器从中断的地方继续下载。
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#### wget 功能
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* 可以使用 REST 和 RANGE 恢复中止的下载
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* 可以使用文件名通配符和递归镜像目录
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* 为许多不同语言的基于NLS的消息文件
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* 可选将下载的文档中的绝对链接转换为相对链接，以便下载的文档可以在本地链接到彼此
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* 可在大多数类 UNIX 操作系统以及 Microsoft Windows 上运行
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* 支持 HTTP 代理
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* 支持 HTTP cookie
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* 支持持久 HTTP 连接
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* 无人值守/后台操作
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* 使用本地文件时间戳来确定是否需要在镜像时重新下载文档
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有关 wget 的进一步用法，请参阅以下文章。
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[如何在 Linux 中安装和使用 wget][6]
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#### #4 Curl
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[curl][7]类似于 wget，但是不支持多线程，但令人惊讶的是，与 wget 相比，它的下载速度更快。
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curl 是一个使用支持的协议（DICT、FILE、FTP、FTPS、GOPHER、HTTP、HTTPS、IMAP、IMAPS、LDAP、LDAPS、POP3、POP3S、RTMP、RTSP、SCP、SFTP、SMTP、SMTPS、TELNET和TFTP）传输数据到服务器上或传输到本地的工具。
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该命令旨在无需用户交互即可工作。此外，curl 支持代理、用户身份验证、FTP 上传、HTTP POST、SSL 连接、Cookie、恢复文件传输、Metalink 等。curl 由 libcurl 为所有相关传输功能提供支持。
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如果指定的 URL 没有 `protocol://` 前缀，curl 将尝试猜测你可能需要什么协议。例如，以 “ftp.” 开头的主机名 curl 将假定你要使用FTP。如果没有找到特定的协议，那么默认为HTTP。
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参考下面的文章来进一步使用 curl。
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[如何在 Linux 中安装和使用 curl] [8]
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--------------------------------------------------------------------------------
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via: http://www.2daygeek.com/best-4-command-line-download-managers-accelerators-for-linux/
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作者：[Magesh Maruthamuthu][a]
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译者：[geekpi](https://github.com/geekpi)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.2daygeek.com/author/magesh/
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[1]:https://aria2.github.io/
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[2]:http://www.2daygeek.com/aria2-command-line-download-utility-tool/
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[3]:https://axel.alioth.debian.org/
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[4]:http://www.2daygeek.com/axel-command-line-downloader-accelerator-for-linux/
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[5]:https://www.gnu.org/software/wget/
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[6]:http://www.2daygeek.com/wget-command-line-download-utility-tool/
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[7]:https://curl.haxx.se/
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[8]:http://www.2daygeek.com/curl-command-line-download-manager/
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