diff --git a/sources/tech/20230620.0 ⭐️ Using cd Command in Linux.md b/sources/tech/20230620.0 ⭐️ Using cd Command in Linux.md new file mode 100644 index 0000000000..3227b18014 --- /dev/null +++ b/sources/tech/20230620.0 ⭐️ Using cd Command in Linux.md @@ -0,0 +1,186 @@ +[#]: subject: "Using cd Command in Linux" +[#]: via: "https://itsfoss.com/cd-command/" +[#]: author: "Abhishek Prakash https://itsfoss.com/author/abhishek/" +[#]: collector: "lkxed" +[#]: translator: " " +[#]: reviewer: " " +[#]: publisher: " " +[#]: url: " " + +Using cd Command in Linux +====== + +The cd command in Linux is used for changing directories. cd is actually short for change directories. + +It's one of the [essential Linux commands][1] that you must know. + +Using the cd command is quite simple: + +``` +cd path_to_directory +``` + +It cannot go any simple than this, can it? + +However, it's the path part that you should understand to easily travel through the [filesystem][2] without getting confused. + +Here's a quick recall of absolute and relative paths. + +![Absolute vs relative path in Linux][3] + +Let's see some examples of using the cd command. + +### Use absolute path to change the directory + +It will be easier to understand visually. Look at the image below. + +![Absolute path travel to the python directory][4] + +My current location is my home directory (`/home/abhishek`) and I have to go to the `python` directory inside the `scripts` directory. + +Let's say I want to use the absolute path. The absolute path to the pyth`/home/abhishek/scripts/python`. + +``` +cd /home/abhishek/scripts/python +``` + +![cd command with absolute path][5] + +### Use relative path to change directories + +Let's take the same example but this time, I'll take the relative path. + +![Relative path example][6] + +The relative path to the `python` directory from my home directory is `scripts/python`. Let's use this: + +``` +cd scripts/python +``` + +![cd command with relative path][7] + +### Go up the directory + +So far, you are going down the 'flow'. What if you have to go up a directory? + +Let's say, you are in `/home/abhishek/scripts/python` and you have to up a directory to `scripts`?. + +![][8] + +Using the absolute path is always an option but it is quite lengthy. Instead, you can use the special directory notation `..`. The double dots (..) mean parent directory or up a directory. Single dot (.) means the current directory. + +``` +cd .. +``` + +Here's an example: + +![cd up a directory][9] + +You can use the `..` to travel up the path in the Linux filesystem hierarchy. + +Suppose I am in the `python` directory in the above image and want to go to the `code` directory. Here's what I could do: + +``` +cd ../../code +``` + +![Go up the directory using cd command][10] + +### Go to the home directory + +If you feel lost in all these directory travels and want to go back home, there are so many simple shortcuts. + +In fact, the simplest of them is to use the cd command without any option. + +``` +cd +``` + +That will take you back to your home directory from anywhere on the filesystem. + +Alternatively, you can use the `~` notation which means home directory. + +``` +cd ~ +``` + +![Use cd to go back home][11] + +### Go to the root directory + +Though you won't use it as often as the previous one, it is still good to know. + +If you want to go back to the root directory from where the filesystem begins, use this: + +``` +cd / +``` + +There is no 'magic' involved here. `/` denotes root when used at the beginning of a path. Don't confuse it with path separators. + +![Paths in Linux][12] + +### Switch back to the previous directory + +This is a lifesaver or should I say timesaver. When you are deep inside a directory structure and then go to another directory and then you feel the need to go back to the previous location, this shortcut helps. + +``` +cd - +``` + +Not clear yet? Let me show an example. + +I am in the location `/etc/apt/sources.list.d`. From here, I go to `/home/abhishek/scripts/python` to work on my code. And then I realized that I have to check something again in `/etc/apt/sources.list.d` directory. + +The usual approach would be to do this which makes me type all the path again: + +![Go back to previous directory][13] + +But the smart approach is to use this: + +![Use cd - to go back to previous directory][14] + +See, no need to type the lengthy path again. Works wonder! + +### 🏋️ Exercise time + +If you want to practice the cd command, here's a little practice exercise for you. + +- Open a terminal and go to the `/var/log` directory. [Check the directory contents][15]. What do you see? +- Now, go to `/var` directory. This is up a directory. +- From here, go back to your home directory. + +And that's good enough content for you to get familiar with the cd command. Here are some other important commands you should know about. + +Let me know if you have questions or suggestions. + +-------------------------------------------------------------------------------- + +via: https://itsfoss.com/cd-command/ + +作者:[Abhishek Prakash][a] +选题:[lkxed][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://itsfoss.com/author/abhishek/ +[b]: https://github.com/lkxed/ +[1]: https://itsfoss.com/essential-ubuntu-commands/ +[2]: https://linuxhandbook.com:443/linux-directory-structure/ +[3]: https://linuxhandbook.com/content/images/2021/04/absolute-vs-relative-path-linux.png +[4]: https://itsfoss.com/content/images/2023/06/absolute-path-cd-1.png +[5]: https://itsfoss.com/content/images/2023/06/cd-absolute-path.png +[6]: https://itsfoss.com/content/images/2023/06/absolute-path-cd-2.png +[7]: https://itsfoss.com/content/images/2023/06/cd-relative-path.png +[8]: https://itsfoss.com/content/images/2023/06/relative-path-cd.png +[9]: https://itsfoss.com/content/images/2023/06/cd-up-directory.png +[10]: https://itsfoss.com/content/images/2023/06/go-up-directory-cd-command.png +[11]: https://itsfoss.com/content/images/2023/06/cd-go-back-home.png +[12]: https://linuxhandbook.com/content/images/2021/04/path-linux.png +[13]: https://itsfoss.com/content/images/2023/06/cd-previous-directory.png +[14]: https://itsfoss.com/content/images/2023/06/use-cd-shortcut-to-previous-directory-1.png +[15]: https://itsfoss.com/list-directory-content/