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3.8 KiB
Markdown
84 lines
3.8 KiB
Markdown
如何从Linux命令行截屏
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Linux上有着许多不同口味儿的截屏工具,包括桌面环境专用的截屏程序(如: KDE里面的KSnapshot,GNOME里面的gnome-screenshot,Xfce的Screenshooter),或者是通用的截屏程序(如 Shutter)。而Scort("SCReen shOT"的缩写)是最独一无二的截屏工具之一,它是一个**命令行截屏工具**。虽然它的界面十分简约,但Scrot在功能上和其它专用的基于GUI的屏幕捕获工具一样强大。举个例子,Scrot支持延时截屏,截屏调整品质/大小,命令行传递等功能。如果你是那些热衷命令行的爱好者之一,Scrot应该是你加入兵器库中的又一实用工具。在这个教程中,我将会描述**如何在命令行中用Scrot截屏**。
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### 在Linux中安装Scrot ###
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在 Debian,Ubuntu 或 Linux Mint 上安装Scrot:
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$ sudo apt-get install scrot
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在 Fedora 上安装Scrot:
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$ sudo yum install scrot
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要在CentOS上安装Scrot,你可以按照下列步骤从源码编译:
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首先[在CentOS上启用Repoforge][1],然后使用下列命令:
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$ sudo yum install giblib-devel
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$ wget http://linuxbrit.co.uk/downloads/scrot-0.8.tar.gz
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$ tar xvfvz scrot-0.8.tar.gz
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$ cd scrot-0.8
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$ ./configure
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$ make
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$ sudo make install
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### 用Scrot截屏 ###
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在这个教程的下面的部分,我会描述如何通过几种不同方法用Scrot截屏。
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#### 1. 截下整个桌面 ####
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截取整个桌面十分简单。只需运行Scrot命令,不需要任何参数,然后它会保存一张整个桌面的截屏,以(日期标记).png的文件形式保存在当前文件目录下。
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$ scrot
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你也可以指定保存目标文件夹和截图文件名。
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$ scrot ~/Pictures/my_desktop.png
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#### 2. 截取特定窗口或矩形区域 ####
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Scrot允许你在桌面选择一个特定的窗口或定义一个矩形区域来截图。使用下列命令来实现:
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$ scrot -s
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运行这个命令后,继续用你的鼠标单击任意窗口或画出一个矩形,它能够触发对选定窗口/区域的屏幕截取。(LCTT译注,还要使用鼠标,伐快乐)
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有时候你选定的区域或窗口可能会被桌面的其它窗口部分遮挡。在这种情况下,你在截屏前需要一点时间来清理那个部分。那正是延迟截屏能够帮到你的,就像下面所描述的那样。
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#### 3. 延迟截屏 ####
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延迟截取在各种情况下都很实用。就在截图前,你可能想要移动一下窗口,激活一下菜单,或是触发特定时间(如通知)等等。 使用“-d N”参数,我们可以将截屏进程延迟N秒。
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$ scrot -s -d 5
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#### 4. 调整截屏质量 ####
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你可以在1到100的范围内调整截取的图像质量(数字越大质量越高)。默认质量设置为75。
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$ scrot -q 50
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#### 5. 调整截屏尺寸 ####
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你可以在1到100的范围内调整截取的图像尺寸(数字越大尺寸越大)。减小截屏的尺寸到原图的10%:
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$ scrot -t 10
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#### 6. 将截取的截屏传递给其它命令 ####
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Scrot允许你发送保存的截屏图像给任意一个命令作为它们的输入。这个选项在你想对截屏图像做任意后期处理的时候十分实用。截屏的文件名/路径跟随于“$f”字符串之后。
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$ scrot -e 'mv $f ~/screenshots'
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--------------------------------------------------------------------------------
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via: http://xmodulo.com/2014/05/take-screenshot-command-line-linux.html
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译者:[alim0x](https://github.com/alim0x) 校对:[wxy](https://github.com/wxy)
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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://xmodulo.com/2013/01/how-to-set-up-rpmforge-repoforge-repository-on-centos.html
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