Can I use other commands?

Yes, you can use other commands in combination with echo. Here are a few examples:

Using Command Substitution:
You can use the output of a command as part of the echo statement by using backticks ` or $(...).
```
echo "Current directory: $(pwd)"
```
This will print the current working directory.
Using Variables with Other Commands:
You can also combine echo with other commands to display their output.
```
file_count=$(ls | wc -l)
echo "Number of files: $file_count"
```
This counts the number of files in the current directory and prints it.
Piping Output:
You can pipe the output of one command into echo.
```
ls | echo "Files: $(cat)"
```
This will list files and prepend "Files:" to the output.

Feel free to ask if you need more examples or specific use cases!