add pwd to bash guide, very common (#27341)

* add pwd to bash guide, very common

* updated the home directory path

guide/english/bash/bash-pwd/index.md

@@ -0,0 +1,31 @@
+---
+title: Bash pwd
+---
+
+## Bash pwd
+
+`pwd` or 'print working directory' is a command on Unix-like operating systems to show you which directory you are currently in.
+
+### Usage
+
+```bash
+pwd
+```
+You can see the directory you are in.
+
+Most used options:
+It is normally used without any options.
+
+### Example:
+Determine which directory you are in.
+
+```bash
+$ pwd
+/users/username
+```
+It looks like we are in the home directory.
+
+#### More Information:
+
+* [Wikipedia](https://en.wikipedia.org/wiki/Pwd)
+* [Shapeshed](https://shapeshed.com/unix-pwd/)