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doc: script with space spawn example for windows #8035

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doc: script with space spawn example for windows #8035

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10 changes: 9 additions & 1 deletion doc/api/child_process.md
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Expand Up @@ -82,7 +82,8 @@ be launched using [`child_process.execFile()`][]. When running on Windows, `.bat
and `.cmd` files can be invoked using [`child_process.spawn()`][] with the `shell`
option set, with [`child_process.exec()`][], or by spawning `cmd.exe` and passing
the `.bat` or `.cmd` file as an argument (which is what the `shell` option and
[`child_process.exec()`][] do).
[`child_process.exec()`][] do). In any case, if the script filename contains
spaces it needs to be quoted.

```js
// On Windows Only ...
Expand Down Expand Up @@ -110,6 +111,13 @@ exec('my.bat', (err, stdout, stderr) => {
}
console.log(stdout);
});

// Script with spaces in the filename:
const bat = spawn('"my script.cmd"', ['a', 'b'], { shell:true });
// or:
exec('"my script.cmd" a b', (err, stdout, stderr) => {
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Maybe just for my own understading… these two variants won’t be distinguishable, right?

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No, they won't. Final Winapi call will have the same parameter (something like cmd.exe /s /k ""my script.cmd" a b")

// ...
});
```

### child_process.exec(command[, options][, callback])
Expand Down