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# Scrot: Linux command-line screen grabs made simple
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by [Scott Nesbitt][a] · November 30, 2017
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> Scrot is a basic, flexible tool that offers a number of handy options for taking screen captures from the Linux command line.
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[][1]
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There are great tools on the Linux desktop for taking screen captures, such as [KSnapshot][2] and [Shutter][3]. Even the simple utility that comes with the GNOME desktop does a pretty good job of capturing screens. But what if you rarely need to take screen captures? Or you use a Linux distribution without a built-in capture tool, or an older computer with limited resources?
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Turn to the command line and a little utility called [Scrot][4]. It does a fine job of taking simple screen captures, and it includes a few features that might surprise you.
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### Getting started with Scrot
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Many Linux distributions come with Scrot already installed—to check, type `which scrot`. If it isn't there, you can install Scrot using your distro's package manager. If you're willing to compile the code, grab it [from GitHub][5].
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To take a screen capture, crack open a terminal window and type `scrot [filename]`, where `[filename]` is the name of file to which you want to save the image (for example, `desktop.png`). If you don't include a name for the file, Scrot will create one for you, such as `2017-09-24-185009_1687x938_scrot.png`. (That filename isn't as descriptive it could be, is it? That's why it's better to add one to the command.)
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Running Scrot with no options takes a screen capture of your entire desktop. If you don't want to do that, Scrot lets you focus on smaller portions of your screen.
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### Taking a screen capture of a single window
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Tell Scrot to take a screen capture of a single window by typing `scrot -u [filename]`.
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The `-u` option tells Scrot to grab the window currently in focus. That's usually the terminal window you're working in, which might not be the one you want.
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To grab another window on your desktop, type `scrot -s [filename]`.
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The `-s` option lets you do one of two things:
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* select an open window, or
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* draw a rectangle around a window or a portion of a window to capture it.
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You can also set a delay, which gives you a little more time to select the window you want to capture. To do that, type `scrot -u -d [num] [filename]`.
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The `-d` option tells Scrot to wait before grabbing the window, and `[num]` is the number of seconds to wait. Specifying `-d 5` (wait five seconds) should give you enough time to choose a window.
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### More useful options
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Scrot offers a number of additional features (most of which I never use). The ones I find most useful include:
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* `-b` also grabs the window's border
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* `-t` grabs a window and creates a thumbnail of it. This can be useful when you're posting screen captures online.
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* `-c` creates a countdown in your terminal when you use the `-d` option.
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To learn about Scrot's other options, check out the its documentation by typing `man scrot` in a terminal window, or [read it online][6]. Then start snapping images of your screen.
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It's basic, but Scrot gets the job done nicely.
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--------------------------------------------------------------------------------
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via: https://opensource.com/article/17/11/taking-screen-captures-linux-command-line-scrot
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作者：[Scott Nesbitt][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]:https://opensource.com/users/scottnesbitt
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[1]:https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/community-penguins-osdc-lead.png?itok=BmqsAF4A
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[2]:https://www.kde.org/applications/graphics/ksnapshot/
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[3]:https://launchpad.net/shutter
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[4]:https://github.com/dreamer/scrot
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[5]:http://manpages.ubuntu.com/manpages/precise/man1/scrot.1.html
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[6]:https://github.com/dreamer/scrot
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# Scrot：让你在命令行中进行截屏更加简单
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> Scrot 是一个简单、灵活，并且提供了许多选项的 Linux 命令行截屏工具。
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[][1]
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Linux 桌面上有许多用于截屏的优秀工具，比如 [Ksnapshot][1] 和 [Shutter][2] 。甚至 GNOME 桌面自带的简易截屏工具也能够很好的工作。但是，如果你很少截屏，或者你使用的 Linux 发行版没有内建截屏工具，或者你使用的是一台资源有限的老电脑，那么你该怎么办呢？
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或许你可以转向命令行，使用一个叫做 [Scrot][4] 的实用工具。它能够完成简单的截屏工作，同时它所具有的一些特性也许会让你感到非常惊喜。
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### 走近 Scrot
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许多 Linux 发行版都会预先安装上 Scrot ，可以输入 `which scrot` 命令来查看系统中是否安装有 Scrot 。如果没有，那么可以使用你的 Linux 发行版的包管理器来安装。如果你想从源代码编译安装，那么也可以从 [GitHub][5] 上下载源代码。
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如果要进行截屏，首先打开一个终端窗口，然后输入 `scrot [filename]` ，`[filename]` 是你想要保存的图片文件的名字（比如 `desktop.png`）。如果缺省了该参数，那么 scrot 会自动创建一个名字，比如 `2017-09-24-185009_1687x938_scrot.png` 。（这个名字缺乏了对图片内容的描述，这就是为什么最好在命令中指定一个名字作为参数。）
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如果不带任何参数运行 Scrot，那么它将会对整个桌面进行截屏。如果不想这样，那么你也可以对屏幕中的一个小区域进行截图。
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### 对单一窗口进行截屏
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可以通过输入 `scrot -u [filename]` 命令来对一个窗口进行截屏。
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`-u` 选项告诉 Scrot 对当前窗口进行截屏，这通常是我们正在工作的终端窗口，也许不是你想要的。
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如果要对桌面上的另一个窗口进行截屏，需要输入 `scrot -s [filename]` 。
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`-s` 选项可以让你做下面两件事的其中一件：
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* 选择一个打开着的窗口
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* 在一个窗口的周围或一片区域画一个矩形进行捕获
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你也可以设置一个时延，这样让你能够有时间来选择你想要捕获的窗口。可以通过 `scrot -u -d [num] [filename]` 来设置时延。
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`-d` 选项告诉 Scrot 在捕获窗口前先等待一段时间，`[num]` 是需要等待的秒数。指定为 `-d 5` （等待 5 秒）应该能够让你有足够的时间来选择窗口。
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### 更多有用的选项
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Scrot 还提供了许多额外的特性（绝大多数我从来没有使用过）。下面是我发现的一些有用的选项：
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* `-b` 捕获窗口的边界
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* `-t` 捕获窗口并创建一个缩略图。当你需要把截图张贴到网上的时候，这会非常有用
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* `-c` 当你同时使用了 `-d` 选项的时候，在终端中创建倒计时
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如果你想了解 Scrot 的其他选项，可以在终端中输入 `man scrot` 来查看它的手册，或者[在线阅读][6]。然后开始使用 Scrot 进行截屏。
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虽然 Scrot 很简单，但它的确能够工作得很好。
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--------------------------------------------------------------------------------
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via: https://opensource.com/article/17/11/taking-screen-captures-linux-command-line-scrot
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作者：[Scott Nesbitt][a]
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译者：[ucasFL](https://github.com/ucasFL)
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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]:https://opensource.com/users/scottnesbitt
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[1]:https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/community-penguins-osdc-lead.png?itok=BmqsAF4A
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[2]:https://www.kde.org/applications/graphics/ksnapshot/
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[3]:https://launchpad.net/shutter
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[4]:https://github.com/dreamer/scrot
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[5]:http://manpages.ubuntu.com/manpages/precise/man1/scrot.1.html
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[6]:https://github.com/dreamer/scrot
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