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为什么 micro 在 Ubuntu 22.04 中不能被识别为文本编辑器？

tag-icon • tag-icon command-line text-editor update-alternatives visudo
为什么 micro 在 Ubuntu 22.04 中不能被识别为文本编辑器？

我sudo apt install micro在 22.04 上安装了 micro

我想将 visudo 与 micro 一起使用。

export EDITOR=micro然后下一visudo行在 nano 中打开。所以，然后我尝试了sudo update-alternatives --config editor这个也没有显示 micro。（我删除了 vim-tiny 以查看它是否将其从列表中删除）输出：


  Selection    Path            Priority   Status
------------------------------------------------------------
* 0            /bin/nano        40        auto mode
  1            /bin/ed         -100       manual mode
  2            /bin/nano        40        manual mode

没有微信，但我有微信

我可以在终端中输入以下代码来运行 micromicro

如何解决这个问题？

答案1

为什么 micro 在 Ubuntu 22.04 中不能被识别为文本编辑器？

软件包维护者似乎没有在micro软件包中包含执行此操作的后安装脚本：

$ apt source micro
Reading package lists... Done
NOTICE: 'micro' packaging is maintained in the 'Git' version control system at:
https://salsa.debian.org/go-team/packages/micro.git
Please use:
git clone https://salsa.debian.org/go-team/packages/micro.git
to retrieve the latest (possibly unreleased) updates to the package.
Need to get 820 kB of source archives.
Get:1 http://archive.ubuntu.com/ubuntu jammy-updates/universe micro 2.0.9-1ubuntu0.22.04.2 (dsc) [2,664 B]
Get:2 http://archive.ubuntu.com/ubuntu jammy-updates/universe micro 2.0.9-1ubuntu0.22.04.2 (tar) [812 kB]
Get:3 http://archive.ubuntu.com/ubuntu jammy-updates/universe micro 2.0.9-1ubuntu0.22.04.2 (diff) [5,528 B]
Fetched 820 kB in 2s (369 kB/s)  
dpkg-source: info: extracting micro in micro-2.0.9
dpkg-source: info: unpacking micro_2.0.9.orig.tar.gz
dpkg-source: info: unpacking micro_2.0.9-1ubuntu0.22.04.2.debian.tar.xz
dpkg-source: info: using patch list from debian/patches/series
dpkg-source: info: applying 01-disable-commit-hash-and-date.patch
dpkg-source: info: applying use-original-fork.patch
$
$
$ find micro-2.0.9/ -name "*postinst" -print -exec cat {} \;
$

将其与以下nano包进行比较：

$ apt source nano
Reading package lists... Done
NOTICE: 'nano' packaging is maintained in the 'Git' version control system at:
https://salsa.debian.org/debian/nano.git
Please use:
git clone https://salsa.debian.org/debian/nano.git
to retrieve the latest (possibly unreleased) updates to the package.
Need to get 1,567 kB of source archives.
Get:1 http://archive.ubuntu.com/ubuntu jammy/main nano 6.2-1 (dsc) [2,192 B]
Get:2 http://archive.ubuntu.com/ubuntu jammy/main nano 6.2-1 (tar) [1,532 kB]
Get:3 http://archive.ubuntu.com/ubuntu jammy/main nano 6.2-1 (asc) [833 B]
Get:4 http://archive.ubuntu.com/ubuntu jammy/main nano 6.2-1 (diff) [32.7 kB]
Fetched 1,567 kB in 2s (860 kB/s)
dpkg-source: info: extracting nano in nano-6.2
dpkg-source: info: unpacking nano_6.2.orig.tar.xz
dpkg-source: info: unpacking nano_6.2-1.debian.tar.xz
$
$
$ find nano-6.2/ -name "*postinst" -print -exec cat {} \;
nano-6.2/debian/nano.postinst
#!/bin/sh

set -e

if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
    update-alternatives --install /usr/bin/editor editor /bin/nano 40 \
      --slave /usr/share/man/man1/editor.1.gz editor.1.gz \
      /usr/share/man/man1/nano.1.gz
    update-alternatives --install /usr/bin/pico pico /bin/nano 10 \
      --slave /usr/share/man/man1/pico.1.gz pico.1.gz \
      /usr/share/man/man1/nano.1.gz
fi

#DEBHELPER#
nano-6.2/debian/nano-tiny.postinst
#!/bin/sh

set -e

if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
    update-alternatives --install /usr/bin/editor editor /bin/nano-tiny 0 \
      --slave /usr/share/man/man1/editor.1.gz editor.1.gz \
      /usr/share/man/man1/nano-tiny.1.gz
fi

#DEBHELPER#
$

如何解决这个问题？

像这样暂时设置环境变量：

sudo  EDITOR=micro visudo

或者按照以下格式将编辑器添加到 Ubuntu 替代系统：

update-alternatives --install <link> <name> <path> <priority>

像这样：

sudo update-alternatives --install /usr/bin/editor editor /usr/bin/micro 40

以便您以后可以通过以下方式选择它：

sudo update-alternatives --config editor
有关更多相关信息解释，另请参阅：

“select-editor” 和 “update-alternatives --config editor” 之间的区别

答案2

man visudo提示一下为什么它不起作用：

sudo does not preserve the SUDO_EDITOR, VISUAL,
or EDITOR environment variables unless they are present in
the env_keep list or the env_reset option is disabled in the
sudoers file.  The default editor path is
/usr/bin/nano:/usr/bin/vim:/usr/bin/vi which can be set at
compile time via the --with-editor configure option.

为了使其以简单的方式工作，使用

sudo EDITOR=micro visudo

反而。

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