How to navigate the file system?

To navigate the file system in a Unix-like operating system, you can use the cd (change directory) command. Here are some common commands and examples:

Change to a specific directory:
```
cd /path/to/directory
```
Go up one directory level:
```
cd ..
```
Go to the home directory:
```
cd ~
```
Go to the root directory:
```
cd /
```
List files and directories in the current directory:
```
ls
```
List files with detailed information:
```
ls -l
```
Navigate using relative paths: If you are in /home/user and want to go to /home/user/documents, you can simply use:
```
cd documents
```

These commands will help you move around the file system and view its contents.