`dev` command with `&&` incorrectly parsed

[jbrains]

Describe the bug

In netlify.toml, when I write this dev command

[dev]
  command = "bundle install && bundle exec jekyll serve --port 4002 --incremental --future"

the shell command netlify dev responds with

⬥ Starting framework dev server
Unknown switches "--port", "--incremental", "--future"
Did you mean?  "--path"
⠹ Waiting for framework dev server to be ready on port 4002⬥ Command failed with exit code 15: bundle install && bundle exec jekyll serve --port 4002 --incremental --future. Shutting down Netlify Dev server

It appears that netlify dev parses the string && as if it were an argument to the bundle install command, rather than as the bash operator.

When I use netlify build, this problem doesn't occur.

Steps to reproduce

1. In netlify.toml, specify a [dev] command that connects two bash commands with &&.
2. Run netlify dev.

The command fails.

This behavior is the same when I try to use the --command switch.

When the [build] command has && in it, netlify build behaves as expected.

Configuration

Sample contents of netlify.toml:

[build]
  command = "bundle install && bundle exec jekyll build --future"
  publish = "www"

[dev]
  command = "bundle install && bundle exec jekyll serve --port 4002 --incremental --future"
  targetPort = 4002

Environment

• Pop!_OS 24.04, Linux 6.18.7-76061807-generic #202601231045176970322824.04~cb87b5b SMP PREEMPT_DYNAMIC Thu J x86_64 x86_64 x86_64 GNU/Linux
• zsh 5.9
• netlify-cli/26.0.0 linux-x64 node-v20.20.2

[puneetdixit200]

I would like to work on this issue.

From my understanding, the netlify dev command is not correctly handling chained shell commands using &&, likely due to how the command string is being parsed or executed.
I will reproduce the issue locally and investigate how the CLI processes the dev.command, then update the execution logic to properly support shell operators like &&.

Please let me know if there are any specific areas I should focus on.

Thank you.

[jbrains]

I think you have enough information to try to fix the problem. Good luck and thank you.

[puneetdixit200]

@jbrains I have exam tomorrow, I'll start working on this after that

[jbrains]

@puneetdixit200 Good luck on your exam! I don't feel urgency regarding this defect, so I am happy for anyone who would like to try to fix it. :)