Is it possible to execute bash/shell scripts?

[royfrancis]

Is it possible to execute bash/shell scripts? Or at least show code highlighting?

---
title: Code highlighting
---

# Python

```{python}
import os
os.getcwd()
```

# Shell

```{bash}
#!/bin/bash
echo "Today is " `date`
```

[royfrancis]

Seems like I have found a solution. Setting engine: knitr makes it work. Surely, there must be a solution that doesn't involve R.

---
title: Code highlighting
engine: knitr
---

## Python

```{python}
import os
os.getcwd()
```

## Shell

```{bash}
#!/bin/bash
echo "Today is " `date`
```

[mcanouil]

You can use Jupyter (as long as you have the right kernel to execute Bash code) instead of knitr, but you need to use an engine.
See #4634 for related discussion.

[royfrancis]

@mcanouil Need to revive this question. Why don't bash chunks work with jupyter engine?

knitr.qmd

---
title: knitr engine
engine: knitr
---

```{python}
#| filename: python
#| eval: true

from datetime import date
print("Today's date:", date.today())
```

```{bash}
#| filename: bash
#| eval: true

#!/bin/bash
echo "Today is " `date`
```

jupyter.qmd

---
title: jupyter engine
engine: jupyter
---

```{python}
#| filename: python
#| eval: true

from datetime import date
print("Today's date:", date.today())
```

```{bash}
#| filename: bash
#| eval: true

#!/bin/bash
echo "Today is " `date`
```

$quarto --version
1.3.433

Related to #7172

[mcanouil]

Why don't bash chunks work with jupyter engine?

That's a question for Jupyter developers.

There are kernels for bash in Jupyter.
This was answered in the various thread linked.

[cscheid]

Just to correct a little: it's not a question for the Jupyter developers, because quarto is the tool converting .qmd code cells to .ipynb notebooks.

With that said, it is the case that Jupyter notebooks generally don't support the execution of code cells in multiple languages the way that knitr does. So, with the Jupyter engine, you need to find a different way to do it.

The Python kernel in the Jupyter engine offers cell magics, and that's how we expose shell execution capabilities in quarto: https://quarto.org/docs/computations/execution-options.html#shell-commands