选题[tech]: 20210905 Create a photo collage from the Linux command line

sources/tech/20210905 Create a photo collage from the Linux command line.md
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+[#]: subject: "Create a photo collage from the Linux command line"
+[#]: via: "https://opensource.com/article/21/9/photo-montage-imagemagick"
+[#]: author: "Jim Hall https://opensource.com/users/jim-hall"
+[#]: collector: "lujun9972"
+[#]: translator: " "
+[#]: reviewer: " "
+[#]: publisher: " "
+[#]: url: " "
+
+Create a photo collage from the Linux command line
+======
+Here's how I use ImageMagick to make photo grids for my social media
+posts.
+![Polaroids and palm trees][1]
+
+ImageMagick is the "Swiss Army knife" of manipulating images on the command line. While you could use a desktop graphics program like GIMP or GLIMPSE to adjust or combine photos and graphics, sometimes it's just easier to use one of the almost dozen tools from ImageMagick.
+
+For example, I frequently find myself creating image montages to share on social media. Let's say I wanted to share a montage or "image grid" of several screenshots. To do that, I use the ImageMagick `montage` command. 
+
+ImageMagick is a full suite of tools, and the one I use here is the `montage` command. The general syntax of the `montage` command looks like this:
+
+
+```
+`montage {input} {actions} {output}`
+```
+
+In my case, my screenshots are already the same size: 320x240 pixels.  To create a montage of six of these images, in a grid that's two screenshots wide by three tall, I can use this command:
+
+
+```
+$ montage acronia.png \
+ascii-table.png \
+music.png \
+programming-chess.png \
+petra.png \
+amb.png \
+-tile 2x3 -geometry +1+1 \ 
+screenshot-montage.png
+```
+
+This creates an image that's composed of the six screenshots, with a 1-pixel border around each. Doing the math, that's 644 pixels wide and 726 pixels high.
+
+Note the order of the images: ImageMagick montage arranges the images from left-to-right and top-to-bottom.
+
+![Screenshot montage][2]
+
+(Jim Hall, [CC BY-SA 4.0][3])
+
+In my example, the first row of images shows the open source 2D shooter Acronia and an ASCII programming example, the middle row is an open source music player and a chess programming example, and the third row shows the open source game Post Apocalyptic Petra and the FreeDOS AMB Help reader.
+
+### Install ImageMagick on Linux
+
+On Linux, you can install ImageMagick using your package manager. For instance, on Fedora or similar:
+
+
+```
+`$ sudo dnf install imagemagick`
+```
+
+On Debian and similar:
+
+
+```
+`$ sudo apt install imagemagick`
+```
+
+On macOS, use [MacPorts][4] or [Homebrew][5].
+
+On Windows, use [Chocolatey][6].
+
+These open source photo libraries help you stay organized while making your pictures look great.
+
+--------------------------------------------------------------------------------
+
+via: https://opensource.com/article/21/9/photo-montage-imagemagick
+
+作者：[Jim Hall][a]
+选题：[lujun9972][b]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]: https://opensource.com/users/jim-hall
+[b]: https://github.com/lujun9972
+[1]: https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/design_photo_art_polaroids.png?itok=SqPLgWxJ (Polaroids and palm trees)
+[2]: https://opensource.com/sites/default/files/uploads/screenshot-montage_0.png (Screenshot montage)
+[3]: https://creativecommons.org/licenses/by-sa/4.0/
+[4]: https://opensource.com/article/20/11/macports
+[5]: https://opensource.com/article/20/6/homebrew-mac
+[6]: https://opensource.com/article/20/3/chocolatey