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sources/tech/20190320 Quickly Go Back To A Specific Parent Directory Using bd Command In Linux.md → translated/tech/20190320 Quickly Go Back To A Specific Parent Directory Using bd Command In Linux.md
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@ -7,87 +7,85 @@
[#]: via: (https://www.2daygeek.com/bd-quickly-go-back-to-a-specific-parent-directory-in-linux/) [#]: via: (https://www.2daygeek.com/bd-quickly-go-back-to-a-specific-parent-directory-in-linux/)
[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/) [#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
Quickly Go Back To A Specific Parent Directory Using bd Command In Linux 在 Linux 中使用 bd 命令快速返回到特定的父目录
====== ======
Two days back we had written an article about autocd. It’s a builtin shell variable that helps us to **[navigate to inside a directory without cd command][1]**. <to 校正：我在 ubuntu 上似乎没有按照这个教程成功使用 bd 命令，难道我的姿势不对？>
If you want to come back to previous directory then you have to type `cd ..`. 两天前我们写了一篇关于 `autocd` 的文章，它是一个内置的 `shell` 变量，可以帮助我们在**[没有 `cd` 命令的情况下导航到目录中][1]**.
If you want to go back to two directories then you have to type `cd ../..`. 如果你想回到上一级目录，那么你需要输入 `cd ..`。
It’s normal in Linux but if you want to come back from 9th directory to 3rd directory, then it’s horrible to use cd command. 如果你想回到上两级目录，那么你需要输入 `cd ../..`。
What will be the solution for this. 这在 Linux 中是正常的，但如果你想从第九个目录回到第三个目录，那么使用 cd 命令是很糟糕的。
Yes, we have a solution in Linux for everything. We can go with bd command, to make easy this kind of situation. 有什么解决方案呢？
### What Is bd Command? 是的，在 Linux 中有一个解决方案。我们可以使用 bd 命令来轻松应对这种情况。
bd command allow users to quickly go back to a parent directory in Linux instead of typing `cd ../../..` repeatedly. ### 什么是 bd 命令？
You can list the contents of a given directory without mentioning the full path `ls `bd Directory_Name``. It supports following other commands such as ls, ln, echo, zip, tar etc.. bd 命令允许用户快速返回 Linux 中的父目录，而不是反复输入 `cd ../../..`。
Also, it allow us to execute a shell file without mentioning the full path `bd p`/shell_file.sh`. 你可以列出给定目录的内容，而不用提供完整路径 `ls `bd Directory_Name``。它支持以下其它命令，如 ls、ln、echo、zip、tar 等。
### How To Install bd Command in Linux? 另外，它还允许我们执行 shell 文件而不用提供完整路径 `bd p`/shell_file.sh``。
There is no official distribution package for bd except Debian/Ubuntu. Hence, we need to perform manual method. ### 如何在 Linux 中安装 bd 命令？
For **`Debian/Ubuntu`** systems, use **[APT-GET Command][2]** or **[APT Command][3]** to install bd. 除了 Debian/Ubuntu 之外，bd 没有官方发行包。因此，我们需要手动执行方法。
对于 **`Debian/Ubuntu`** 系统，使用 **[APT-GET 命令][2]**或**[APT 命令][3]**来安装 bd。
``` ```
$ sudo apt install bd $ sudo apt install bd
``` ```
For other Linux distributions. 对于其它 Linux 发行版，使用 **[wget 命令][4]**下载 bd 可执行二进制文件。
Download the bd executable binary file using **[wget command][4]**.
``` ```
$ sudo wget --no-check-certificate -O /usr/local/bin/bd https://raw.github.com/vigneshwaranr/bd/master/bd $ sudo wget --no-check-certificate -O /usr/local/bin/bd https://raw.github.com/vigneshwaranr/bd/master/bd
``` ```
Set executable permission to the bd binary file. 设置 bd 二进制文件的可执行权限。
``` ```
$ sudo chmod +rx /usr/local/bin/bd $ sudo chmod +rx /usr/local/bin/bd
``` ```
Append the below values in the `.bashrc` file. 在 `.bashrc` 文件中添加以下值。
``` ```
$ echo 'alias bd=". bd -si"' >> ~/.bashrc $ echo 'alias bd=". bd -si"' >> ~/.bashrc
``` ```
Run the following command to make the changes to take effect. 运行以下命令以使更改生效。
``` ```
$ source ~/.bashrc $ source ~/.bashrc
``` ```
To enable auto completion, perform the following two steps. 要启用自动完成，执行以下两个步骤。
``` ```
$ sudo wget -O /etc/bash_completion.d/bd https://raw.github.com/vigneshwaranr/bd/master/bash_completion.d/bd $ sudo wget -O /etc/bash_completion.d/bd https://raw.github.com/vigneshwaranr/bd/master/bash_completion.d/bd
$ sudo source /etc/bash_completion.d/bd $ sudo source /etc/bash_completion.d/bd
``` ```
We have successfully installed and configured the bd utility on the system. It’s time to test it. 我们已经在系统上成功安装并配置了 bd 实用程序，现在是时候测试一下了。
I’m going to take the below directory path for this testing. 我将使用下面的目录路径进行测试。
Run the `pwd` command or `dirs` command or `tree` command to know your current location. 运行 `pwd` 命令或 `dirs` 命令，亦或是 `tree` 命令来了解你当前的路径。
``` ```
daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ pwd daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ pwd
or 或者
daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ dirs daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ dirs
/usr/share/icons/Adwaita/256x256/apps /usr/share/icons/Adwaita/256x256/apps
``` ```
I’m currently in `/usr/share/icons/Adwaita/256x256/apps` and if i want to go to `icons` directory quickly then simple type the following command. 我现在在 `/usr/share/icons/Adwaita/256x256/apps` 目录，如果我想快速跳转到 `icons` 目录，那么只需输入以下命令即可。
``` ```
daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ bd icons daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ bd icons
@ -95,17 +93,16 @@ daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ bd icons
daygeek@Ubuntu18:/usr/share/icons$ daygeek@Ubuntu18:/usr/share/icons$
``` ```
Even, you no need to type full directory name instead you can type few letters. 甚至，你不需要输入完整的目录名称，也可以输入几个字母。
``` ```
daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ bd i daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ bd i
/usr/share/icons/ /usr/share/icons/
daygeek@Ubuntu18:/usr/share/icons$ daygeek@Ubuntu18:/usr/share/icons$
``` ```
`Note:` If there are more than one directories with same name up in the hierarchy, bd will take you to the closest. (Not considering the immediate parent.) `注意:` 如果层次结构中有多个同名的目录，bd 会将你带到最近的目录。（不考虑直接的父目录）
If you would like to list a given directory contents then the following format. It prints the contents of `/usr/share/icons/`. 如果要列出给定的目录内容，使用以下格式。它会打印出 `/usr/share/icons/` 的内容。
``` ```
$ ls -lh `bd icons` $ ls -lh `bd icons`
@ -131,7 +128,7 @@ drwxr-xr-x 10 root root 4.0K Feb 25 15:46 ubuntu-mono-light
drwxr-xr-x 3 root root 4.0K Jul 25 2018 whiteglass drwxr-xr-x 3 root root 4.0K Jul 25 2018 whiteglass
``` ```
If you want to execute a file somewhere in a parent directory then use the following format. It will run the following shell file `/usr/share/icons/users-list.sh`. 如果要在父目录中的某个位置执行文件，使用以下格式。它将运行 shell 文件 `/usr/share/icons/users-list.sh`。
``` ```
$ `bd i`/users-list.sh $ `bd i`/users-list.sh
@ -150,7 +147,7 @@ user2
user3 user3
``` ```
If you reside in `/usr/share/icons/Adwaita/256x256/apps` and would you like to navigate to different parent directory then use the following format. The below command will navigate to `/usr/share/icons/gnome` directory. 如果你位于 `/usr/share/icons/Adwaita/256x256/apps` 中，想要导航到不同的父目录，使用以下格式。以下命令将导航到 `/usr/share/icons/gnome` 目录。
``` ```
$ cd `bd i`/gnome $ cd `bd i`/gnome
@ -159,7 +156,7 @@ daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ cd `bd icon`/gnome
daygeek@Ubuntu18:/usr/share/icons/gnome$ daygeek@Ubuntu18:/usr/share/icons/gnome$
``` ```
If you reside in `/usr/share/icons/Adwaita/256x256/apps` and would you like to create a new directory under `/usr/share/icons/` then use the following format. 如果你位于 `/usr/share/icons/Adwaita/256x256/apps` ，你想在 `/usr/share/icons/` 下创建一个新目录，使用以下格式。
``` ```
$ daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ sudo mkdir `bd icons`/2g $ daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ sudo mkdir `bd icons`/2g
@ -168,9 +165,9 @@ daygeek@Ubuntu18:/usr/share/icons/Adwaita/256x256/apps$ ls -ld `bd icon`/2g
drwxr-xr-x 2 root root 4096 Mar 16 05:44 /usr/share/icons//2g drwxr-xr-x 2 root root 4096 Mar 16 05:44 /usr/share/icons//2g
``` ```
This tutorial allows you to quickly go back to a specific parent directory but there is no option to move forward quickly. 本教程允许你快速返回到特定的父目录，但没有快速前进的选项。
We have another solution for this, will come up with new solution shortly. Please stay tune with us. 我们有另一个解决方案，很快就会提出新的解决方案，请跟我们保持联系。
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