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Translated 20220214 How I configure Vim as my default editor on Linux.md
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[#]: subject: "How I configure Vim as my default editor on Linux"
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[#]: via: "https://opensource.com/article/22/2/configure-vim-default-editor"
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[#]: author: "David Both https://opensource.com/users/dboth"
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[#]: collector: "lujun9972"
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[#]: translator: "lkxed"
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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How I configure Vim as my default editor on Linux
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======
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Vim is my favorite editor. These changes to my system make Vim available
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as the default in programs that use a different editor by default.
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![Person using a laptop][1]
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I have used Linux for about 25 years and Unix for a few years before that. During that time, I have developed preferences for some tools that I use daily. One of the most important tools I use is the Vim editor.
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I started using Vi when I learned Solaris in the early ‘90s because I was told that it would always be available on any system, which is true in my experience. I have tried other editors, and they all do the job. However, I find that Vim works best for me, and I use it so much that my Vim muscle memory causes me to attempt to use its command keystrokes even with other editors.
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Plus, I just really like Vim.
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Many configuration files use Vi instead of Vim, and you can run the `vi` command. However, the `vi` command is a link to `vim`.
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Many Linux tools use editors that emulate or just call [Nano][2], [Emacs][3], or Vim. Some other tools allow users—like those with clear preferences—to link to their favorite editor. The two examples that affected me the most were Bash command-line editing, which defaults to Emacs, and the Alpine text-mode email client, which defaults to the Pico editor. In fact, the Pico editor was written explicitly for use in the Pine email client, which is the predecessor to Alpine.
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Not all programs that use external editors are configurable. Some use only the editor specified by the developer. For those applications that are configurable, there are different methods for selecting your preferred editor.
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### Linux command-line editing
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Besides actually editing text files, the other tool I use that requires the most editing is the Bash shell. The default Bash editor is Emacs. Although I have used Emacs, I definitely prefer Vim. So many years ago, I switched the default editing style for Bash command-line editing from Emacs to Vim, which is much more comfortable for me.
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There are a couple of ways to configure Bash. You can use a local configuration file, such as `/home/yourhomedirectory/.bashrc`, which only changes the default for your user account and not for other users on the same system. I prefer to make these types of changes global, which basically means my personal account and root. In this second case, you can create your own configuration file and place it in the `/etc/profile.d` directory.
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I added a file named `myBashConfig.sh` to `/etc/profile.d`. There are files for all the installed shells in the `/etc/profile.d` directory. During the launch of a terminal session, each shell reads only the files intended for it based on the file name extensions. For example, the Bash shell only reads the files with a `.sh` extension.
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```
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<SNIP>
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alias vim='vim -c "colorscheme desert" '
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# Set vi for bash editing mode
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set -o vi
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# Set vi as the default editor for all apps that check this
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EDITOR=vi
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<SNIP>
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```
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The line **set -o vi** in this global Bash configuration file segment sets Vi as the default editor. The **-o** option on this **set** command defines vi as the editor. You need to close any running Bash sessions and open new ones for this to take effect.
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At this point, you can now use all of your familiar Vim editing commands, including cursor movement. Just press the **Escape** key to enter Vim editing mode. I especially like the ability to use **b** multiple times to move the cursor back multiple words.
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### Set Vim as the default for other programs
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Some Linux command-line tools and programs check the **$EDITOR** environment variable to determine which editor to use. You can check the current value of this variable for yourself using the following command. I did this on one of my newly installed virtual machines to verify what the default actually is.
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```
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# echo $EDITOR
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/usr/bin/nano
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#
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```
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By default, Fedora programs that check the **$EDITOR** environment variable will use the Nano editor. Adding the line **EDITOR=vi** as shown in the snippet above to `myBashConfig.sh` changes the default to the Vi (Vim) editor. Not all command-line programs that use an external editor check this environment variable.
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### Edit email in Alpine
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A few weeks ago, I decided that Pico was just not working well for me as my email editor. I could make it work and did for some time after switching to [Alpine][4] from Thunderbird. I found that Pico was getting in my way when I tried to use Vim key sequences, impacting my productivity.
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I read in the Alpine Help that it is possible to change the default editor. I decided to change it to Vim. This is actually very easy to do.
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On the Alpine main menu, press the **S** key to enter setup and then **C** for configuration. In the _Composer Preferences_ section, select the _Enable Alternate Editor Command_ and _Enable Alternate Editor Implicitly_ items with an **X**. Several pages down in the _Advanced User Preferences_ section, find the **Editor** line. It should look like this if it has not already been changed.
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```
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`Editor = <No Value Set>`
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```
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Highlight this **Editor** line with the cursor bar, and press **Enter** to edit the line. Change **<No Value Set>** to **vim**, press **Enter**, and then press the **E** key to exit and **Y** to save the changes you have made.
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To edit an email message using Vim, just enter the email body, and Vim starts automatically, just like Pico does. All of my favorite editing capabilities are there because it is actually using Vim. Even the **Esc :wq** sequence to exit Vim is the same.
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### Final thoughts
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I much prefer Vim to other editors, and these changes to my system make it available as the default in programs that use a different editor by default. Some programs use the **$EDITOR** environment variable, so you only need to make that change once. Other programs like Alpine have user configuration options that you must set individually for each program.
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This ability to select your preferred external editor is quite in line with the Unix Philosophy tenet, “Each program should do one thing and do it well.” Why write another editor when there are several perfectly good ones out there? And it also meets the Linux Philosophy tenet, “Use your favorite editor.”
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Of course, you can change your default text-mode editor to Nano, Pico, EMACS, or any other one that you prefer.
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--------------------------------------------------------------------------------
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via: https://opensource.com/article/22/2/configure-vim-default-editor
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作者：[David Both][a]
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选题：[lujun9972][b]
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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/dboth
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[b]: https://github.com/lujun9972
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[1]: https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/laptop_screen_desk_work_chat_text.png?itok=UXqIDRDD (Person using a laptop)
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[2]: https://opensource.com/article/20/12/gnu-nano
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[3]: https://opensource.com/tags/emacs
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[4]: https://opensource.com/article/21/5/alpine-linux-email
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@ -0,0 +1,100 @@
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[#]: subject: "How I configure Vim as my default editor on Linux"
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[#]: via: "https://opensource.com/article/22/2/configure-vim-default-editor"
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[#]: author: "David Both https://opensource.com/users/dboth"
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[#]: collector: "lujun9972"
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[#]: translator: "lkxed"
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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我如何在 Linux 上把 Vim 配置为默认编辑器
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======
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Vim 是我最喜爱的编辑器。对于那些默认使用其他编辑器的程序，我对系统所做的这些改变可以使得 Vim 成为它们默认编辑器。
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![一个正在使用笔记本电脑的人][1]
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我使用 Linux 大概有 25 年了，在那之前我还使用了几年的 Unix。在这段时间里，我对一些日常使用的工具形成了偏好。Vim 是我使用的最重要的工具之一。
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我在 90 年代初学习 Solaris 时，就开始使用 Vi 了，因为有人告诉我，它在任何系统上都能使用。从我的经验来看，确实是这样。我也试过其他编辑器，它们都能够胜任工作。但是，对于我来说，Vim 的使用效果最好。我经常使用它，以至于形成了肌肉记忆，甚至我在使用其他编辑器时也会下意识地去按 Vim 的快捷键。
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另外，我只是单纯地喜欢 Vim 而已。
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许多配置文件使用 Vi 而不是 Vim，你可以运行 `vi` 命令。不过，`vi` 命令其实是 `vim` 命令的一个链接。
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许多 Linux 工具使用的编辑器都是在模拟或是直接调用的 [Nano][2]、[Emacs][3] 或者 Vim。其他的一些工具允许用户（比如那些有着明确偏好的用户）使用他们喜欢的编辑器。举两个对我影响最大的例子，一个是 Bash 命令行，它默认使用 Emacs；另一个是 Alpine 文本模式的邮件客户端，它默认使用 Pico。事实上，Pico 是专门为 Pine 邮件客户端编写的，而 Pine 是 Alpine 的前身。
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并非所有使用外部编辑器的程序都是可配置的。有些程序只使用开发者指定的编辑器。对于那些可配置的应用程序，有不同的方法来选择你喜欢的编辑器。
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### 在 Linux 命令行中编辑
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除了实际编辑文本文件外，另一个我经常使用，且和编辑密切相关的工具是 Bash shell。Bash 的默认编辑器是 Emacs。虽然我也用过 Emacs，但我肯定更喜欢 Vim。所以很多年前，我把 Bash 命令行的默认编辑器从 Emacs 换成了 Vim，这对我来说更舒服。
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有很多种方法可以配置 Bash。你可以使用一个本地配置文件，比如 `/home/yourhomedirectory/.bashrc`，它只对你的用户账户进行默认修改，而不对同一系统的其他用户进行修改。我个人倾向于让这些改变成为全局性的，基本上就是我的个人账户和 root。如果你也想全局配置，你可以创建你自己的配置文件，并把它放在 `/etc/profile.d` 目录中。
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我在 `/etc/profile.d` 中添加了一个名为 `myBashConfig.sh` 的文件。`/etc/profile.d` 目录中存放了所有已安装的 shell 的启动文件。在启动终端会话时，每个 shell 仅会根据文件名的扩展名，读取为其准备的启动文件。例如，Bash shell 只读取扩展名为 `.sh` 的文件。
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```shell
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<SNIP>
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alias vim='vim -c "colorscheme desert" '
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# 把 vi 设置为 Bash 的默认编辑器
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set -o vi
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# 为所有检查 $EDITOR 变量的程序设置默认编辑器为 vi
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EDITOR=vi
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<SNIP>
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```
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在这个全局 Bash 配置文件段中，`set -o vi` 将 Vi 设置为默认编辑器。这个 `set` 命令中的 `-o` 选项将 `vi` 定义为编辑器。为使配置生效，你需要关闭所有正在运行的 Bash 会话，并打开新的会话。
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现在，你现在可以使用所有你熟悉的 Vim 命令，包括光标移动。只要按下 **Escape** 键就可以进入 Vim 编辑模式。我特别喜欢多次使用 **b** 将光标移回多个字的功能。
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### 将 Vim 设置为其他程序的默认值
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一些 Linux 命令行工具和程序会检查 `$EDITOR` 环境变量来决定使用哪个编辑器。你可以用下面的命令检查这个变量的当前值。我在一个新安装的虚拟机上运行过该命令，以查看默认的编辑器到底是什么。
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```shell
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# echo $EDITOR
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/usr/bin/nano
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#
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```
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默认情况下，检查 `$EDITOR` 环境变量的 Fedora 程序会使用 Nano 编辑器。在 `myBashConfig.sh` 中添加一行 `EDITOR=vi`（如上面的片段所示），可以将默认值改为 Vi（Vim）编辑器。然而，不是所有使用外部编辑器的命令行程序都会检查这个环境变量。
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### 在 Alpine 中编辑电子邮件
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几周前，我发现我的电子邮件编辑器 Pico 不能很好地工作。在使用 [Alpine][4] 之后，我从 Thunderbird 切换到了 Pico，它勉强够用，我也使用了一段时间。但我发现，当我试图使用
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我在 Alpine 的用户帮助中看到，默认编辑器是可以修改的。我决定把它改成 Vim。实际上这很容易做到。
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在 Alpine 主菜单上，按 **S** 键进入设置，然后按 **C** 键进行配置。在 “<ruby>编辑器设置<rt>Composer Preferences</rt></ruby>” 部分，按 **X** 选择 “<ruby>启用外部编辑器命令<rt>Enable Alternate Editor Command</rt></ruby>” 和 “<ruby>隐式启用外部编辑器<rt>Enable Alternate Editor Implicitly</rt></ruby>” 项目。在往下滚动几页的 “<ruby>高级用户设置<rt>Advanced User Preferences</rt></ruby>” 部分，找到 **Editor** 那一行。如果它还没有被修改的话，它应该是这样的：
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```shell
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`Editor = <No Value Set>`
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```
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用光标栏突出显示 **Editor** 这一行，然后按 **Enter** 键来编辑。将 `<No Value Set>` 改为 `vim`，再按 **Enter**，然后按 **E** 键退出，最后按 **Y** 键保存修改。
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要用 Vim 编辑电子邮件，只需输入电子邮件正文，Vim 就会自动启动，就像 Pico 那样。所有我喜欢的编辑功能都还在，因为它实际上是在使用 Vim。甚至退出 Vim 的 `Esc :wq` 操作也是一样的。
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### 最后，我的想法
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与其他编辑器相比，我更喜欢 Vim，对我的系统进行的这些改动后，那些默认使用其他编辑器的应用程序，将使用 Vim 来替代它们的默认编辑器。有些程序使用 `$EDITOR` 环境变量，因此你只需要做一次修改就够了。其他有用户配置选项的程序，如 Alpine，则必须为每个程序单独设置。
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这种可以选择你喜欢的外部编辑器的能力，非常符合 Unix 哲学的宗旨：“每个程序都只做一件事，而且要做得出色”。既然已经有几个优秀的编辑器，为什么还要再写一个呢？而且它也符合 Linux 哲学的宗旨：“使用你最喜欢的编辑器”。
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当然，你可以把你的默认文本编辑器改为 Nano、Pico、EMACS 或任何其他你喜欢的编辑器。
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--------------------------------------------------------------------------------
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via: https://opensource.com/article/22/2/configure-vim-default-editor
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作者：[David Both][a]
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选题：[lujun9972][b]
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译者：[lkxed](https://github.com/lkxed)
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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/dboth
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[b]: https://github.com/lujun9972
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[1]: https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/laptop_screen_desk_work_chat_text.png?itok=UXqIDRDD (Person using a laptop)
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[2]: https://opensource.com/article/20/12/gnu-nano
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[3]: https://opensource.com/tags/emacs
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[4]: https://opensource.com/article/21/5/alpine-linux-email
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