How to Run Multiple Commands in a Shell Script?

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Asked By RandomPineapple42 On

I'm trying to streamline my workflow by running two commands in a single shell script for a utility called Pronterface. The commands I need to execute are: `python -m venv venv` to create a Python virtual environment, followed by `source venv/bin/activate` to activate that environment. Currently, I've made separate scripts for each command because I keep forgetting them. Is it possible to run these two commands one after the other in a shell script? Should I use a wait command in between, or is there a better approach? I have a bit of programming experience, mostly dabbling, and I've considered using Perl for this task to ensure the first command completes before the second starts. Am I overthinking this?

4 Answers

Answered By ScriptingSquirrel On

You have the right idea, but running commands in a shell script is straightforward. Each command runs one after another, so there's no need for complexity. Just keep everything in a single script and run it. Your commands will execute in order. If you’re worried about needing the first command to finish before the second, don't stress! Bash handles that for you. Just ensure your environment is set up correctly before executing the script.

Answered By CodeCrafter99 On

There's some useful info out there on scripting. Generally, you want to ensure your script has the right interpreter line at the top, like `#!/bin/bash`, and that you make it executable with `chmod +x script.sh`. You can chain commands simply by placing them on new lines in your script. No need for `wait` or anything like that!

Answered By BeginnerBash On

Totally get where you're coming from! You don't need Perl for this; you're actually overthinking it a bit. Just place both commands in your shell script, and they will execute back-to-back because the shell waits for each command to finish before starting the next. So stick with Bash for this—it's perfect for simple tasks like this!

Answered By TechieTaco123 On

You can absolutely run multiple commands sequentially in a shell script without needing anything special like a wait command. Just write each command on a new line in the script, and Bash will execute them in order. For example:

```bash
python -m venv venv
source venv/bin/activate
```

There's no need for a separate script for each command. Once the first command finishes, the second will start automatically. Just make sure the script is executable using `chmod +x scriptname.sh`. It's that simple!

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