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(翻译中......)
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gcp – Advanced Command Line File Copier Inspired By cp
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================================================================================
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A few weeks back, we discussed [advanced copy][1] (modified cp command that shows progress bar). A reader dropped in a comment pointing out another utility that also provides basic cp command functionality but along with some advanced features. So, in this article, lets discuss the very same command line utility — **gcp**.
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### gcp – Advanced Command Line File Copier ###
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gcp — as the manual suggests — is an advanced command line file copier that is inspired by the standard [cp command][2] but provides various advanced features like progress bar indicator, source lists, continuous copying even if there is a problematic file etc.
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Here is a complete list of options :
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### Testing Environment ###
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- OS – Ubuntu 13.04
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- Shell – Bash 4.2.45
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- Application – gcp 0.1.3
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### A Brief Tutorial ###
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Here are some of the examples of gcp command :
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**1. Transfer Progress Indicator**
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The gcp command provides transfer progress indicator so that the user is aware of the current status of the copying process.
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Here is an example :
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So you can see that the gcp command provides details like complete file size, percentage of copy complete, transfer rate and time left for the copy operation to complete.
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**2. Copy Directories Recursively Through -r Option**
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To copy complete directories recursively, use -r option.
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Here is an example :
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So you can see that the gcp command shows the transfer indicator taking in account the complete size of the folder.
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**3. Elaborate Error Descriptions**
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In case of any error, the gcp command displays descriptive error messages pinning down the individual culprit file.
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Here is an example :
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So you can see that the gcp command provided a detailed error message related to the file **August Rush.avi** that was already present inside the destination folder. But an error did not disrupt the copy of other file(s).
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**4. Get Detailed Output Through -v Option**
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The verbose option -v can be used to keep track of all the details that the gcp command is up to.
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Here is an example :
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So you can see that extended details were provided in output when -v option was used.
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**5. Create And Use Sources List**
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One of the shining features of the gcp command is that it lets you create a list of source files that you can use later.
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For example, I saved the list of source file in the following copy operation using the option **–sources-save**.
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The list name in this case is **SOURCES_SAVE**. You can confirm the saved list through **–sources-list** option.
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So you can see that a list named **SOURCES_SAVE** is saved.
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Now, I deleted the files that I copied in the first step :
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and repeated the first step again but without mentioning the source file names. The option **–sources-load** was use to load the source file names from the list **SOURCES_SAVE**.
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So you can see that the gcp command picked up the source file names from the list **SOURCES_SAVE** and the copy process started normally.
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Here are other options related to source file lists :
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The gcp command provides various other useful options. For complete list of options, read the [man page of gcp][3].
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### Download/Installation/Configuration ###
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Here are some of the important links related to the gcp command :
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- [Home Page][4]
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- [Download Link][5]
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- [Another useful gcp Tutorial][6]
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You can alternatively download and install the gcp command through command line package managers like yum, apt-get etc. Ubuntu users can also use Ubuntu software centre to download and install this utility.
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### Pros ###
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- Status bar and source lists are the USP of this utility.
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- Skips the problematic file(s) but the copy operation is not hampered.
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- Usage is similar to that of the standard cp command.
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### Cons ###
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- While copying folders, it could be better if copy status of each file is displayed.
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- Doesn’t come pre-installed in most of the Linux distributions.
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### Conclusion ###
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If you are fed up of waiting blindly while copying large files through standard cp command the gcp is a good alternative. System administrators will love the source list feature. It’s a must have utility.
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**Have you ever used gcp or any other advanced cp-like command line utility? Share your experience with us.**
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--------------------------------------------------------------------------------
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via: http://mylinuxbook.com/gcp-advanced-command-line-file-copier-inspired-by-cp/
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译者：[runningwater](https://github.com/runningwater) 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) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[1]:http://mylinuxbook.com/advanced-copy-cp-command/
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[2]:http://www.cyberciti.biz/faq/cp-copy-command-in-unix-examples/
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[3]:http://manpages.ubuntu.com/manpages/precise/en/man1/gcp.1.html
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[4]:http://wiki.goffi.org/wiki/Gcp/en
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[5]:http://wiki.goffi.org/wiki/Gcp/en
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[6]:http://www.hecticgeek.com/2012/03/gcp-command-line-file-copy-ubuntu-linux/
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gcp – 源于CP的高级命令行文件拷贝工具
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================================================================================
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几周前，我们讨论了[高级拷贝][1](修改于cp命令，让其可以显示复制进度条)。一位读者在注释中指出其他实用工具不仅也提供了基本的cp命令功能，而且还提供cp不具有的高级功能。所以，这篇文章里，我们将会讨论非常相似的命令行工具－**gcp**。
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### gcp – 高级命令行文件拷贝器 ###
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gcp — 根据操作手册介绍 — 是一款高级命令行文件拷贝工具软件，其灵感来自于标准的 [cp命令工具][2]， 但它提供了像进度条显示、源文件列表、拷贝过程中出现错误文件不中断继续拷贝等cp所不具有的各项高级功能。
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下面是完整的选项列表：
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### 测试环境###
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- 操作系统 – Ubuntu 13.04
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- Shell工具 – Bash 4.2.45
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- 应用程序 – gcp 0.1.3
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### 简短的教程 ###
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下面是一些gcp命令的例子：
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**1. 复制进度显示**
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gcp命令提供了进度显示功能，以便用户能监控到复制操作的时时状态。
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下面是例子：
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所以，你可以看到，gcp命令显示了如文件大小、复制完成的百分比、传输速率和复制操作完成的剩余时间等的所有细节。
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**2. 使用-r选项递归的拷贝目录**
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要递归拷贝完整的目录，可以使用-r选项。
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下面是例子：
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所以，你可以看到，gcp命令显示了用来统计所有文件夹大小的复制情况的进度条。
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**3. 精心设计的错误描述显示**
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任何情况的错误，gcp命令都会把拷贝失败的文件的信息显示出来。
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下面是例子：
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所以，你可以看到，gcp命令列出了详细的错误消息，即关于**August Rush.avi**文件已经在目标目录中存在，拷贝失败。但这个错误并不会影响其它文件的正常拷贝操作。
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**4. 使用-v选项输出详细信息**
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详细选项-v参数可以用来跟踪gcp命令执行时的所有详细消息。
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下面是例子：
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所以，你可以看到，使用-v选项可以输出很多细节信息。
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**5. 创建和使用源列表**
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gcp命令的一个很炫的功能就是可以创建源文件列表，以供后期使用。
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例如，在下面的拷贝操作中，我使用**-sources-save**选项来保存一个源文件列表。
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这例子的列表名叫做**SOURCES_SAVE**。你可以用**–sources-list**选项参数来确认及查看保存的列表。
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那么你可以看到列表名**SOURCES_SAVE**已经保存上了。
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现在，删除我们在第一步中拷贝的文件：
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重复第一步的操作，但不要加上源文件路径名，使用**–sources-load**选项参数来从**SOURCES_SAVE**列表文件中加载源文件路径名。
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所以，你可以看到gcp命令从**SOURCES_SAVE**列表文件中读取源文件路径名，并且正常的执行拷贝操作。
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下面是关于源文件列表的其它选项参数：
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gcp命令还提供了各式名样的其它有用选项。要查看完整的选项，请阅读[gcp帮助主页][3]。
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### Download/Installation/Configuration ###
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下面是关于gcp命令的一些主要链接站点：
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- [主页][4]
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- [下载链接][5]
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- [另一篇很有用的gcp使用教程][6]
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你可以通过使用像yum、apt-get等的命令行包管理工具来下载和安装gcp命令。Ubuntu用户也可以使用Ubuntu软件中心来下载和安装这个工具。
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### 优点 ###
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- 状态条显示和源文件列表是这个工具的核心。
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- 出现有问题的文件会直接跳过，不会影响正常文件的复制操作。
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- 跟标准的cp命令的用法很相似。
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### 不足 ###
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- 在复制文件夹的时候，要是能显示每个文件的复制状态，那就更好了。
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- 在大多数Linux发行版本中没有预先安装。
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### 结论 ###
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如果你厌倦了通过标准cp命令拷贝大量文件而无休止的等待的话，gcp命令是个不错的选择。系统管理员会喜欢上源文件列表的功能的。它是必备工具。
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**你曾经使用过gcp或者类cp的命令行工具吗？可以把你的使用心得跟我们分享。**
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--------------------------------------------------------------------------------
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via: http://mylinuxbook.com/gcp-advanced-command-line-file-copier-inspired-by-cp/
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译者：[runningwater](https://github.com/runningwater) 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) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[1]:http://mylinuxbook.com/advanced-copy-cp-command/
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[2]:http://www.cyberciti.biz/faq/cp-copy-command-in-unix-examples/
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[3]:http://manpages.ubuntu.com/manpages/precise/en/man1/gcp.1.html
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[4]:http://wiki.goffi.org/wiki/Gcp/en
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[5]:http://wiki.goffi.org/wiki/Gcp/en
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[6]:http://www.hecticgeek.com/2012/03/gcp-command-line-file-copy-ubuntu-linux/
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